AN ALPHABETICAL LISTING OF AD&D SKILLS

Acting: The ability to counterfeit moods, emotions and voices, and lie convincingly over a period of time. The more intelligent the audience or victim or target, the less likely this skill will work against them.

Agriculture: This skill includes automatic success at planting, harvesting, storing crops, using an existing irrigation system, tending animals, and butchering. Tasks that require proficiency checks include designing or making an irrigation system, weed and pest control, or other more difficult tasks. If your character already has Weather Lore, add 10% to this skill.

Ancient History: Characters with this proficiency are familiar with the legends, rulers, and writings of a specific historical period in the campaign world. They will recognize, without a proficiency check, items, scrolls, artwork, etc. of that period. They will know the main historical figures, such as kings and powerful villains, and the major circumstances of those individuals' lives and deaths. With a successful proficiency check they will recall lesser figures, such as lords, knights, and heroes, and recall legendary tales, important sigils, and perhaps be able to decipher a small bit of text, symbols, or hieroglyphics.
The DM need not create detailed information FIRST before your character takes this skill, but then he or she should volunteer any pertinent information when it comes up in the scenario. For example, your character knows well the period of King Shaleroot of the Dwarves. The DM has none of this written at first, but one day he decides to include some dwarven things, ties them to that era, and says "The portal you found has markings on it from the time of King Shaleroot." Then, your character may need to roll to obtain further knowledge. To do it in a different manner can be done, but requires a lot more work on the DM's part to set up, and a lot more memorization on the part of the player.

Ancient Languages: Adventurers with this proficiency are familiar with at least one ancient language - i.e. they have the reading/writing proficiency with the chosen languages. If confronted with an example of a historically related language, they can decipher about a paragraph of that tongue with a successful proficiency check.
Each time this skill is taken, the character will gain knowledge of one additional ancient language within the campaign's history.

Animal Handling: This proficiency allows characters to automatically steer carts, plow horses, etc. With a successful proficiency check, they can soothe domesticated animals and beasts of burden which become agitated or frightened.

Animal Lore: Adventurers with animal lore have a store of knowledge about animal behavior, and without any proficiency check will know the basic feeding and social habits (i.e. herding, nesting, etc.) of animals with which they have past experience.
With a proficiency check, a character can determine whether an observed animal is intending to attack or to flee, or predict that animals will come along a trail at a certain time of day. The character can imitate the calls of wild animals (except for very large creatures). A successful check means that the imitation is virtually perfect, and even fools animals of the same type. A failed check might fool other characters, but will not deceive the animals.

Animal Training: Each time this skill is taken, the character may learn how to train one particular type of animal, such as a dog, falcon, parrot, horse, pigeon, elephant, ferret, or something like that. The DM may allow or disallow other animals (even monsters) as they see fit. None of these creatures may have an intelligence of 5 or more to fall under this rule.
Without a roll, the character can train an animal; it just takes time. A few weeks, perhaps, for every trick, and no more tricks than the animal has points of intelligence. If the tasks are simple, no roll is required. Such tasks include dogs being trained to stay, come when summoned, and guard a specific location, pigeons returning to the roost, falcons hunting and killing game, and horses bearing saddles and obeying simple riding commands. But if the tasks are difficult, it will require a roll and may take more than a single point of intelligence (hence cutting down on the total number of tricks that can be taught). Dogs patrolling a circuit, or retrieving specific objects, and horses performing the maneuvers of a knightly charger are examples. Failure of the training roll usually indicates the animal can't learn that trick. The roll is made AFTER the attempt and the time is lost.

Appraising: See Evaluate General.

Armorer: A character with this proficiency can make the types of armor typically available in the campaign world. The armorer requires the proper raw materials (plate metal, tough leather, etc.) and enough time to do the job properly. Time ranges from about two weeks for a shield to 20 weeks for a suit of plate mail armor. No proficiency check is required generally, though if the armorer tries to rush the job or work with less than adequate materials a proficiency check should be rolled to determine if the character is successful.
The armorer can also make a field repair to armor that has been damaged through use. These repairs always require proficiency checks, and if the check fails the armor or shield is lost.
In order to produce quality armor (sufficiently good so the item may be enchanted), requires a roll and double the normal time, OR a special success roll and the same amount of time.

Artistic Ability: Each time this skill is taken during character generation, the character will have a gift for a particular artistic endeavor such a painting, sculpting, songwriter or composition, drawing, etc. This skill normally cost one non-weapon proficiency slot, and you may take as many as you wish during character generation. After that (unless you are a bard or the DM allows it), the skill will require the player to pay 2 slots (to demonstrate the gift is more learned rather than a natural talent). Bards may always pick up another skill here for the cost of one slot.
No roll is normally required for this skill, but you may roll to determine relative quality. Only a critical success may have lasting value. Remember, this skill may take time, sometimes years (a sculpture, for example), so ask you DM how often you may attempt to make such a work of art.
If your character has this skill, it may add 5% to any Evaluate Art roll IF the art is in your field.

Astrology: To the extent the DM has these mystical astrological things working in their campaign, a character with this skill may, upon a successful roll, glean vague portents of the up coming events. Usually, these things are quite vague and cryptic, and the DM will probably require you to let them know in advance for next session that your character intends to use this skill. This will give them time to prepare something appropriate. Without this warning, the results may be less than appealing or the may make little sense.
The character will know about stars, moons, constellations and other celestial objects as well as the legends behind them. They may entertain people by telling their horoscopes and "predicting" the future, vague though it may be (no roll is required for entertainment purposes, and one does not have to give the DM advanced warning). What attempting to predict the future, special or critical successes will be more accurate than simple successes, while fumbles will give contrary results.
Characters with this skill may add 10% to their Navigation skill.

Astronomy: This skill indicates a character has detailed knowledge of the motion of planets, moons, stars, etc. They can predict eclipses, comets, and other cosmic phenomenon (evening and morning stars, full moons, etc.) The astronomer can identify numerous stars and constellations and most celestial objects.
Characters with this skill may add 15% to their Navigation skill.

Barter: This skill allows a character to get a good deal on trades where items are traded or bartered. It is not very effective where prices are set or fixed or when dealing with the help, but where prices are open to negotiation and when dealing with the boss or the owner of the items, they may expect to pay 10% less than what the DM would otherwise expect, or get 10% more when trading their items. This requires a successful roll. Special success may be 15%, and critical success may get as much as 25% more than normal. A fumble will usually get -10% (a penalty). Note: No one knows this skill succeeds or fails until after the deal is struck and they may have time to think about it.

Binding Wounds: Also known as Healing 0 or First Aid 0, this skill is automatically acquired by all adventurers for free. No roll is normally required. With this skill, a character may take an entire round to stabilize a victim of injury. This will stop them from bleeding to death (unless the injuries are internal), start their breathing (drowning victims), and, in general, prevent the further loss of hit points. The skill usually takes 10 SP worth of bandages (though some bit of cloth ripped from some clothing may suffice), and will stabilize a patient. Note: During this activity, the character administering aid cannot attack, will not have dexterity bonuses to their AC, and may be open to attack (attacker at +2 to +4 depending).

Boating: This proficiency is useful for negotiating challenging waters with a rowboat, canoe, barges, rafts, or small dory. When shooting rapids, trying to stay afloat in a storm, or trying to row upstream against a strong current, the character will succeed without a proficiency check - unless the water conditions are very extreme. In this case, the DM will require an appropriately modified roll; a successful roll means that the character negotiates the challenge and no further checks are necessary (until the next stretch of rapids, etc.). Failure does not necessarily mean that the boat sinks, but it gets swept away by the current, or turned about, or moderately swamped (with everything and everyone inside getting wet). If the rough water continues, the character must make additional proficiency checks (every 1d6 rounds).
Though higher to start with, this skill is superseded by Shiphandling. A character with Shiphandling automatically may do whatever they could do with the boating skill. A roll is not normally required unless shooting the rapids or doing something difficult.

Black Smiting: A character with the Black Smithing proficiency can handle a forge, bellows, hammer and tongs, to create tools and other objects out of iron. The character cannot make weapons or armor, but can make (without a proficiency check) simple items such as horseshoes, nails, brackets and buckles. By making a successful proficiency check, the character can create intricate objects such as wire cages and locks. A blacksmith can make an iron hoop for a wheel that has been made by a carpenter; this combination of proficiencies is required for a strong wheel.

Blind Fighting: Normally, when one cannot see what they are fighting, they incur penalties. (-4 to hit AND their AC is 4 worse, for example, goes from AC 2 to AC 6). With this skill, the character automatically negates some of this penalty. They are only -2 to hit (not -4) and suffer no penalty to their AC. If dim light is available (star light, cloudy night with a full moon), they may only be -1 to hit. Furthermore, most character's movement rates are curtailed while they cannot see, but this skill allows one to move at their normal rate IF they make a roll.
Finally, with this skill one can also negate some of the penalty incurred when attacking invisible creatures. Normally at -4 to hit, a character with this skill is only at -2.

Bowyer/Fletcher: This character can make bows and arrows (though not arrowheads) of the types normally available in the campaign. With the appropriate materials, they can make 2d6 arrows in a day. Finding the right branch from a tree to make a bow may take some time, however. The DM will let you know how long, but this process may take weeks to months to complete a fine bow.
A roll is not normally required, but a roll will be required to make exceptional bows (as for exceptional strength). The cost for these things is given for my campaign in the article on ES bows, and the time to make them should reflect this cost. A weapon smith is required to make the arrow heads.

Brewing: This skill includes the brewing of malt beverages (beer, ale, whisky, etc.), the making of wine, and the distilling of stronger drink. All basic skills do not require a roll. If trying for something special, however, they may roll. Simple success is just that, special success is fine drink, perhaps worth 1.5 times the normal rate, critical success is exceptional drink, perhaps sought after for years as "that wonderful vintage." It is these critical successes that may be laid down for long term storage more often than not and may command amazing prices years, decades, or even centuries after the fact. Failure is a ruined batch. A fumble may actually make someone sick.

Carpentry: This skill is basic woodworking and small items (fences, platforms, carts, gallows, cabinets, wagons, shacks) will not require a roll. More complex items will, however, such as small bridges, dumbwaiters, wooden clocks, etc. Very large bridges or buildings will require additional skills such as Engineering.

Cartography: This is a map making skill and map reading skill. With no required rolls, the character may follow a map or make simple makes to find their way back. With a successful roll, the DM will assume you have done such a good job they may point out map anomalies to your character. This skill assume you have paper or parchment and charcoal or some other writing implement, as well as you taking the time necessary to draw the map. Running away down a hall is hardly a good way to map a dungeon.

Charioteering: A character with this skill can move a chariot at its normal speed, and effectively drive it over a smooth, wide road. The proficient character requires no check to drive or steer the chariot, including traveling across relatively flat, open countryside, charging into battle, and performing the turns, stops, and starts that might be required on the battlefield.
By making a proficiency check, the character can guide the chariot through obstacles such as deep fords, steeply climbing terrain, ditches, and rough or rocky ground. Also, with a successful check, the character can add 1/3 to a chariot's movement rate for the duration of a charge or a march. However, failure of this check means that the chariot moves at its normal rate, but that the horses fatigue in half the normal time.
Note that certain obstacles are simply impassable to chariots, including walls, water too deep (or too muddy on the bottom) to ford, thick forests, and mountainous terrain.

Climb: This skill allows a character to climb normal things (trees, rocky hills, anything where numerous hand and foot holds may be. No roll is required with this skill. This skill does NOT allow you to climb sheer walls. Most people without this skill will have to make some sort of roll vs. a statistic or fall.

Climb Walls: This is the Rogue's skill at climbing sheer walls. Members of the Rogue's character class add 60% to the base chance as part of their normal training. Like a Rogue, characters may attempt to climb sheer walls but may not be more than lightly encumbered or wear armor heavier than studded leather.
Rogues get this skill for free.

Cobbling: A character with this skill can makes shoes, boots, and sandals. No checks are normally required, but if the character attempts a field repair of damaged footwear, or tries to fashion shoes from wood or leather that has been scrounged up, a successful check is needed.

Conceal: With this skill an object may be hidden such that it will take a successful Search roll to discover it. The items may be of any size, so hiding it may be simply putting it in a drawer, rigging a false bottom to a chest, making a secret door, or hiding an enormous statue in plain sight, perhaps making it looks like a tree with vines hanging from it. You can even hide yourself or your friends (assuming they do not make noise or move). Of course, this may take time and materials so the DM may rule you do not have one, the other, or both in most instances, but if you do, then you may conceal the object. Anyone watching you conceal an object can, naturally, go right to it and need not make a Search roll.

Cooking: This character knows the basics of food preparation, and he can generally cook, bake, fry, and so forth without a proficiency check. Checks are required if the character attempts to prepare truly gourmet meals, or tries to make a palatable dinner out of unpalatable ingredients (grubs, roots, and bark, for example).

Cryptography: This skill deals with codes and hidden messages within messages. It assumes the character must know the language (though not the code) and may be able to determine the hidden contents. A roll is required. Normally, this is a bit of fun in a game when the DM creates a code and a character tries to crack it, but when reduced to skill rolls, this fun may be lost. However, it is available when appropriate use of it will add something to the game. For example, the busy DM didn't have time to make a code, but assume the intercepted letter from the front line in a war is in code. The character may crack it with a successful roll. Failure means he could not crack it, and a fumble means to deciphered part of it but got the wrong idea and drew erroneous conclusions.

Dancing: The character knows and can perform the moves of many types of dances, including some that involve precise and detailed steps. All dances common to the character's society will be familiar. Rare, archaic, or unusual dances will be known with a proficiency check. Also, characters who have had a chance to observe an unknown dance can perform it (-10% modifier, +5% for each time after the first that it is seen performed).
Truly spectacular dances (the kind that win character's campaign-wide acclaim) combine elements of dance proficiency with skills of Tumbling, Tightrope Walking, and Jumping.

Deep Diving: A character with this proficiency can add 10 feet per round to his speed of descent when diving into the water, or from the surface. Thus, a character with the deep diving proficiency can descend 30 feet per round, plus modifiers for encumbrance, running start, and/or height. Likewise, a character with the deep diving proficiency can surface at a rate of 30 feet (not 20 feet) per round.
This proficiency provides characters with the ability to hold their breath for 2/3 their Constitution scores in rounds, not the 1/3 allowed to most characters. Effects of exceeding the allotted time are the same, regardless of proficiency ratings.
Note: Characters with this proficiency may hold their breathes longer than most, and may give them +1 to their saving throws vs. gas attacks.

Defensive Stance: This skill, with a successful roll, will add 1 to the character's AC (improve it) for that round. They may not move more than half their normal movement rate while defending, but they still may attack as normal. If the roll fails, their AC is normal. If they fumble, their AC is one worse for that round. A special success does no more, but a critical success adds 2 to their AC (improves it by 2) for that round.

Detect Noise: This is the Rogue's skill. A Rogue will initially have +15% more than others who take this skill will have. With this skill and a successful roll, one may hear things normally too faint to be heard and thus alert themselves to possible dangers, or gather other information not normally available.
Rogues get this skill for free.

Direction Sense: This is the ability to keep one's bearings on roadless, trackless land. Proficient characters will not get lost as long as they can either see the sky or have the use of a compass. This means that they can maintain track of a given direction, keeping themselves and their companions traveling in a straight line.
Characters who possess a map and can track their direction of travel can arrive at specific points (towns, ferry crossings, bridges, monuments, wells, springs, etc.) without proficiency checks.
If the map is slightly erroneous, or lacking in crucial details, the characters will have to make successful proficiency checks to accurately arrive at a specific point. This check can be modified for increased difficulty based on poor weather or major problems with the map.

Disguise: With makeup and costuming, a character may alter their appearance to the degree they could fool a stranger. With a successful roll, they may fool a friend. Harder tasks require a roll as well. To appear to be a member of a different race or gender takes a successful roll. Characters who try to appear to be some specific person may be discovered if they fail their roll when confronting a person who knows the individual. Otherwise, the disguises will normally work.

Dodge Missile: This is the monk's skill. Non magical missiles (those that do not require a roll to hit) or thrown weapons that normally hit may yet be dodged with a successful skill roll. To use this skill, however, requires that the character forgo one attack they may yet have for the remainder of the round for each such missile they attempt to dodge. Furthermore, this also assumes the character has told the DM AHEAD of time that they will be doing this against any missile attacks. If the skill is at 50% or less, only one such missile may be dodged AND only if the character still has at least one attack coming later in the round. However, the character may attempt to dodge one additional such missile for each 10% (of fraction thereof) beyond 50% with this skill. Failure means the missile will hit like it should have. Note, these rolls are only made after the DM scores a hit but BEFORE any results of that hit are mentioned. For example, the character may not decide to dodge the blow only AFTER the DM reveals the arrow also does massive acid damage or contained poison.
Monks get this skill for free and start out 25% higher than other people. Character with the Juggling skill add 5% to this skill.

Endurance: A character with this proficiency can perform continual strenuous physical activity for twice as long as a normal character before becoming exhausted. If the character is ever required to make a Strength check or a Constitution check, the character can add 10% OR +2 to that roll.

Engineering: This proficiency is required for the design and construction of objects and installations of all sizes. Note that Carpentry, Stonemasonry, Black Smithing, or other proficiencies also might be necessary for the actual building. Characters can design and supervise the building of houses, boats, small bridges, palisades, and towers - up to about 30 feet high without proficiency checks.
Characters with this skill can try to design large bridges, fortresses, ships, war machines, locks and dams, and other more complicated projects. Plans for these types of objects generally require at least a week (more if an exceptionally large project is being attempted). Complicated tasks require successful proficiency checks before a workable design can be made. A normal failure indicates the engineer will be aware of the failure and can seek to create a new design (go back to the drawing board, so to speak), but a fumble means they will not know of the design flaw until they try to build the object.

Etiquette: Characters with this skill are familiar with the typical manners of formal interaction (at least as they relate to the culture in the campaign world). They know what fanfares are required to greet royal visitors, how to seat the lords and ladies at a table, how to organize the reception line, and how everyone is to be addressed. None of these tasks require a proficiency check.
When dealing with a foreign or completely unknown culture, the characters must pass proficiency checks to correctly gauge the required etiquette. The check should be modified x/-10% if the foreigners are the same race as the character, +5% or more if the character has had some time to observe the foreigners.

Evaluate General: This skill allows a character to know the value, more or less, of most mundane items (non-magical and common, though they may be valuable). These items include trade goods, silks, clothing, furniture, non-magical weapons, and most other items, but exclude art and/or gems and jewelry. The Evaluate General Skill does not require a roll in most instances and is quite high in comparison to more specialized knowledge. If a character attempts to evaluate an art item or gem or piece of jewelry with this skill, they will require a special or critical success to succeed. Otherwise, they cannot tell.

Evaluate Art: Many items, though their material make up may be readily evaluated, contain artistic endeavors which may make them much more valuable. For example, the cash value a gold cup weighing a quarter of a pound is easily known, but a gold chalice with artistic engravings is another matter. Unless the character is already familiar with very similar items (or the item is historically important and they have Ancient History from that period), a roll is required to determine the item's value. Failure usually means the character does not know. A fumble will give a very misleading result. A success will get within 10% of its value, a special success within 5%, and a critical success will nail it down to within 1%. If your character already has Artistic Ability in the area of said item, add 5% to the evaluate roll. A character that passes a proficiency check will be able to identify a forgery of a valuable object.

Evaluate Gems/Jewelry: A successful roll with this skill will give the value of the item within 20%, a special success within 10%, and a critical success within 1%. Failure means the character is not sure whereas a fumble may give very misleading results.

Fast Talk: With a successful roll, a character using this skill may make nearly any proposition seem true. If the target had time to think or is very intelligent, the success is less likely. Subtract 5% for each minute the target has to think and subtract 5% for each point of intelligence above 13 the target has. If the roll is still successful, the fast talker may get by guards, close deals and run, or in general scam someone. Note, the victim will eventually figure this out, so disguise is a good idea or clearly never intending to pass this way again also helps.

Find/Remove Traps: This is the Rogue's skill. Rogues will initially have this skill at +5% more than others will. With a successful roll, a character may find a trap, mechanical or magical. Another successful roll is required to remove or deactivate or simply avoid the trap.
Rogues get this skill for free.

Fire Building: A character with this proficiency can build a fire in 1d20 minutes, as long as there is dry wood and some small bits of tinder. Add another d20 minutes for each of these factors: the wood (or tinder) is wet, it's raining or foggy, or the winds are strong. A proficiency check is required if conditions are bad and the character is forced to work without shelter.

Fishing: A character with this proficiency knows how to catch fish with hook and line, net, and spear. If fish are present in a body of water, a successful proficiency check means the character has caught something. Typically, with a successful check, the fisherman he will catch 1d6 fish in an hour. This number can be doubled if many fish are present. It is reduced to one fish per hour if the character is seeking large quarry (such as sturgeon, muskellunge, giant carp, or salt-water fish). Naturally, this skill will not aid in capturing monsters of the lakes and seas.

First Aid 0 to First Aid 3: See Healing.

Fletcher/Bowyer: See Bowyer/Fletcher.

Forgery: This proficiency indicates a skill at creating false documents, mimicking the handwriting of others, and detecting forgeries. No check is required if the character is simply trying to duplicate a style of writing - the issuing of an anonymous military decree, for example. Characters trying to duplicate the signatures of specific individuals must see those signatures; the DM rolls the proficiency checks secretly to see if the forgeries are successful. If a character writes a longer message in a specific hand, the DM rolls the check with a -10% modifier. The DM should also roll the check if a character seeks to determine if another document is a forgery. On a fumble, the character makes the wrong assumption, whereas a normal failure means that the character is not sure of the truth or falsehood of the sample.

Gaming: A character with this proficiency is familiar with all manner of gambling games. A successful proficiency check usually means the character will win a given game being played with characters without this skill. If facing an opponent with the skill, a skill vs. skill roll will determine the winner.
The character might try to cheat, and this will confer a +15% to the gaming proficiency score and requires a check. If the proficiency check rolled is a fumble. The character gets caught cheating. For every opponent with the gaming skill, subtract 10% from the cheaters roll unless they are "in on it and helping the cheater," in which case add 10%.

Gem Cutting: A character with this proficiency can work 1d10 uncut stones into finished gems each day. The worker needs good light and an assortment of chisels, hammers, and hard cutting blades as well as grinding stones or discs.
The gem cutter can do decent work without a proficiency check; the stones cut will be valued in the typical range for that type of gem. However, if the cutter seeks to do a unique and very high-quality job, a proficiency check is called for. Failure means the stone is destroyed, but success results in a gem of double the usual value.
As much as 50% of the weight of a stone may be lost during normal cutting, but the final value is usually higher. The bits and ices lost almost always need to be gathered for use as abrasives for future cuttings, but a mage may use them as material components (ask the DM what their value is).

Hit Points and Longevity: By taking this skill, a character may exercise and toughen themselves up, thus gaining an advantage to their hit points. For normal people (non-adventurers), this skill usually adds 1 hit point to existing hit points. For adventurers, this skill prohibits the roll of a 1 for each hit dice on the first roll. All ones are rerolled. A second one for the same hit dice, however, will remain a one. This skill may be taken only once and requires the character to exercise at least 1 hour/day while not physically exerting themselves (adventuring or training). If more than a week goes by without this exercise, the hit point is lost, but may be regained when exercises resume.
While faithful to the exercise program, the character adds about 10% to their longevity (about 1 day for every 10 days they exercise). Thus, a man normally may die at 88 years old, but since he exercised, he'll die at 97 years old instead. Furthermore, he will feel better and be in better shape in his declining years and probably enjoy the last 16 years (twice the addition) of his life much, much more with noticeable benefits of strength, endurance, sexual performance, etc., etc.
No roll is normally required, but if the skill increases past 50%, one may cut down on the length of time one needs to exercise each day.

Healing 0: Also known as Binding Wounds or First Aid 0, this skill is automatically acquired by all adventurers for free. No roll is normally required. With this skill, a character may take an entire round to stabilize a victim of injury. This will stop them from bleeding to death (unless the injuries are internal), start their breathing (drowning victims), and, in general, prevent the further loss of hit points. The skill usually takes 10 SP worth of bandages (though some bit of cloth ripped from some clothing may suffice), and will stabilize a patient. Note: During this activity (all healing skills are similarly afflicted), the character administering aid cannot attack, will not have dexterity bonuses to their AC, and may be open to attack (attacker at +2 to +4 depending).

Healing 1: If you begin the round after an injury was just inflicted, and you spend 3 rounds administrating to the wound, and if you then make your Healing 1 roll, you may heal a patient for 1D4 damage (not to exceed the damage done by the injuries inflicted in the last round). Failure of the roll simply indicates the extra healing did not occur (unless you rolled a critical fumble in which case you may further injure the patient by 1d2). Likewise, critical and special success rolls may be given a bonus healing by the DM. No scaring, extra healing, etc. may be indicated by special or critical successes.
You may not learn Healing 1 unless you already know Healing 0 and your percentage with this healing skill may not exceed your percentage with Healing 0.

Healing 2: Similar to Healing 1, but you must spend 5 rounds tending the wound, though you may start within a turn (10 minutes) of any and all injuries. If your roll succeeds, you will heal the patient for up to 1D8 points (not to exceed the damage done by the all injuries in the last turn).
You may not learn Healing 2 unless you already know Healing 1, and your percentage with this healing skill may not exceed your percentage with Healing 1.

Healing 3: This is more like surgery and requires special equipment (which can be purchased for 100 gp and weighs 10 lbs. and comes in a little black bag) and takes 1D4 hours to perform, but any unhealed (normal) injuries may be treated, and if the roll succeeds they will heal the patient for 2d8 damage (not to exceed all remaining damage) OR 1D4 damage for each injury (not to exceed the damage for each separate wound). As some of this basic equipment is alcohol, and the PCs know about germs and how to combat them, infections are not generally a problem. In fact, the very best that can be hoped for is to bring someone back to maximum hit points - 1 for a single injury, or -1d4 for multiple injuries. A small amount of damage must remain somewhere as this is more realistic, still takes some recovery time, and will leave scars. If you need better than this, then you'll have to resort to actual magic. Of course, for people like you and me (the masses) one hit point or 1d4 hit points is a lot, and the recovery time can be measured in days or weeks, but typical adventurers may just walk it off due to superior constitutions and a greater attunement to the universe and the powers that be (part of the justification of their hit points).