I recently helped my gf create a new character and had her read through this for class descriptions.
http://wiki.project1999.com/Players:Newbie
While it's not perfect, the descriptions do a good job of laying out the class at a high level.
That said, my first character here was an enchanter. Doing the Stein of Moggok quest at 12 (or 8 if you are DE) is a great money maker!