Profession is what your character does for a living. Your character's profession is initially decided upon during the Character Origins part of Character Creation and shows the job that your character is currently doing when you have started actually playing your character.

What all does Profession affect?

You already know from character origins that your character's profession gives your character a weekly salary. It might have also given your character some other bonuses. That's not all that your character's profession affects though. Your character's profession also affects the following:
 

• What your character gains with each level increase.
• How effective your character is with certain weapons: your profession might make your character better with daggers than other characters not sharing your profession, for example
• How effective your character is with certain armor: perhaps that heavy armor doesn't slow your character down as much because of your character's profession

Since your character's profession is chosen during creation, it is treated as a life profession. This means that you cannot change your character's profession later on, so you should carefully consider the benefits and negatives of your character's profession. Luckily your character's profession doesn't prevent you from using other skills or equipment. Instead, it may make them more difficult to use or master.