Ok,

I get quick exp buy doing Zorbak's quests. You need 10 chipped bones, really easy to get, and big *name here* jack's funny bone, do both at one, when you finish, you will get 100 gold and 200 exp, but the 50exp and 10 gold while you kill the undead dudes, plus! do both 5 times, go to the inn, you talk to Yulga, and do his quest, you get a graveyard token of each time you do one of Zorbak's quest, get 10, and you will get a free: BONE SWORD! YAY!

Hope this helps

Cheers
Alfano