The 'best' class is subjective, but for help deciding, check out
differences between classes. Based on your user name, I'd think you would be partial to survivors. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
A bow at the start of the game can make things a little easier on you against tough opponents.
If you don't mind spoilers, check out
Early Starting Tips or
Starter Tips? (spoilers).