Recommended builds for Barbarian & Demon Hunter?

Sorry for the newbish question and forgive me if it does not belong here. I am currently a level 56 Barbarian and my girlfriend is a level 56 Demon Hunter. We're grinding through Hell - it's a bit difficult but passable. If possible, could someone recommend builds for both classes? My google-fu has seem to fail on finding thorough guides. Thank you for your time.

Edit: Thanks guys for all your help! Very useful builds - they helped us quite a bit. :D