I do the Vurr'man ruins quest, which is in Oakvale, at the area with the guy in the catapult. If you want any more xp farming strategies, just check the forums.
This Guide is for fighters only I found success at working on it for about 2-3 hours a day, in a week you can get to lvl 40. What you do is you train on cows and low leveled monsters, doesnt really...