Class List; I will include information you have to know, such as armor and weapon type for each class. Read up in the link below for details.
Adept Rogue: Able to adapt to any sort of weapon or armor, but in the beginning is stuck with a weapon and armor type of his/her choice. It isn't until farther in do you unlock the Job Extension quest(Level 25) to be able to use other weapon and armor types.
Blade Brandier: Uses the medium armor type and double-edged swords.
Edge Punisher: Uses the heavy armor type and large two-handed swords.
Flick Reaper: Uses the light armor type and lengthy sickles and scythes to keep enemies away.
Harvest Cleric: Uses the light armor type and staffs, focused on healing magic.
Lord Partizan: Uses the heavy armor type and spears/tridents.
Macabre Dancer: Uses the light armor type and fans as weapons, as well as learning status and healing spells earlier than other classes.
Shadow Warlock: Uses the light armor type and Grimoires' as their attack weapons, very weak physicaly, it is a magic class.
Steam Gunner: Uses the medium armor type and bayonets that run on steam for long-ranged physical attacks.
Tribal Grappler: Uses the light armor type and various gauntlets and gloves for hand-to-hand combat.
Twin Blade: Uses the light armor type and dual daggers for quick striking.
^ Information on each class, scroll down to The World R:2 for the correct list of classes. There are no limits to the classes, but I do ask that you guys try and spread it out a little, we don't need a bunch of Adept Rouges running around. And I'm leaving out the Dual Gunner, apologies if that disappoints you, but they are really too powerful and they also aren't a class that can be normally selected by players anyways.