I'm not a big fan of ww/sprint builds, so I tried many different skills to have fun and be efficient.
This is an overview post, where I will link to all my different mini barbarian guides.
WW / RLTW (Tornado) Basic Guide
Keyfarmer on high Monster Power - Part I
Keyfarmer on high Monster Power - Part II
Uberboss Stun Build
Uberboss Damage Build
Cleave Blow Up Barbarian - fast solo farm build for low Monster Power
Thunder Barbarian (HotA) - fast solo farm build for low Monster Power