[HELP] Fresh lvl70 HC Seasonal Barb with no clue

Hi,

I just started playing hardcore diablo again, I played a bit in season 3 but got bored when nobody wanted to play with me anymore...

Anyway, I just go my barb(http://eu.battle.net/d3/en/profile/Stagg-2855/hero/66054744) up to lvl 70 and got some nice items to go with a WW build, but i'm having some issues, I'm still not strong enough to do T1. Does anyone have some tips to help me along?

p.s. I wasted all my money trying to reroll useless stuff..