Advanced Dungeons and Dragons Classes

The Rogue Class

From the Players Handbook page 38

Rogues are people who feel the world (and everyone in it) somehow owes them a living. They get by day by day, living in the highest style they can afford and doing as little work as possible. The less they have to toil and struggle like everyone else (while maintaining a comfortable standard of living), the better off they think they are. While this attitude isn't evil or cruel, it doesn't foster a good reputation. Many a rogue ha a questionable past or a shady background he'd/she'd prefer was left uninvestigated.

The Thief: Thieves come in all shapes and sizes, ready to live off the fat of the land by the easiest means possible. In some ways they are the epitome of roguishness. The thief's prime requisite is Dexterity, he/she must have a 9 or better to qualify for this class. High numbers in other score are desirable as well (particularly Intelligence). The thief can have any alignment they wish except Lawful Good. Thieves with a Dexterity of 16 or higher gain an additional 10% to their experience gained. A thief can only wear leather armor and Elvin Chain mail. Their skills scores are best when no armor at all is worn. The thief is restricted to weapons that can easily be hidden or concealed.

The Bard: The bard is an optional character class that can be allowed by the DM. He/she makes his/her way way in life by his/her charm, wit, and talent. A good bard should be glib of tongue, light of heart, and fleet of foot (when all else fails).
To become a bard, a character must have a Dexterity of 12 or more, an Intelligence of 13 or more, and a Charisma of 15 or more. The prime requisites of a bard are Dexterity and Charisma. A bard can be of any alignment but must always be partially neutral. Only by retaining some amount of detachment can he/she successfully fulfill his/her role as a bard. A bard by his/her nature is a learner of many things, he/she is a jack-of-all-trades but master of none.
Although as a rogue he can use any weapon, he can only wear up to and including chain mail plus he/she cannot use any kind of a shield.
All bards are proficient singers, chanters, or vocalists and can play a musical instrument of the player's choice. They get singing and musical instrument as a proficiency without the expenditure of points. If the proficiency system is being used, the bard can learn 2 instruments for every point spent on that proficiency.
Bards during their travels pick up a few wizard spells here and there, as a result they can cast magic. The restriction is that the player cannot choose the spell learned, the spell is either chosen at random or the DM picks one. The bard doesn't learn his/her first spell until the 2nd level.  The bard also has limited thief abilities: Climb Walls, Detect Noise, Pick pockets, and Read Languages.

For more info on the Rogue, pick up The Players Handbook.