Building a barb

[gimlisam]

Two things. First: when you hit level 30, put points into Natural Resistance. That will immediately help you to counteract your lack of resistances. Second, and this is personal preference, I absolutely love Leap Attack. I would use it against the shamans (and everything else, for that matter). But against the Shamans, you can start your leap from outside of Inferno range, and then smack them before they can start to fry you. As a bonus, nothing can hit you while you are leaping! It is basically, imo, a ranged attack for a melee barb.

Also, are you dual-wielding or not? It really affects what you do with the build.

GimliSam