A class represents a way of life embraced by a character. It serves as a starting point to help you define your hero, a hook on which you can hang the character?s personality, skills, and other traits. Think of a class as a profession. You can build upon that profession as your hero improves, or you can branch out into different class if it better suits how you want the charcter to develop.
The classes are described in chapter three (That will be the in the guild forum). You can choose from fringer, nobile, scoundrel, scout, soldier, tech specialist, Force adept, Jedi consular, and Jedi guardian.