I will write guide anyway:
1.This is solo guide and im currently finishing act2 without problems. I never got stuck anywhere.
2.Buy on ah gear which will give you critical damage. Crits are your main source of dmg. I currently have 200%+ crit bonus dmg.
If you stack with my build:here:http://eu.battle.net/d3/en/calculator/barbarian#WhRViP!aZU!abbcaZ
critical damage is veeeerryy good.
Just dont go too much, you still need vitality and str.
3. Str, vitality and critical bonus dmg are your best friends! Balance them!
*If you have gear with other stats then that go to auction house, there is relativly cheap substitution. You DONT need uber epic gear which cost 300.000k + per piece.
60k-80k max per piece give, you will chage it soon anyway. I personally paid about 30k per piece :D
4.SHIELDS SHIELDS SHIELDS! You cant survive without them soo you will need 1 h wep.
Buy 1h weapon wih socket, crit bonus dmg, and str. If you can put some vitality it would be great too. Atack speed is not priority.
Now the best part: Socket weapon with emerald gem which gives critical bonus damage.
40% is fine.
NOTE: You sometimes need to adapt your skills. But soo far i rarely chaged it since i created it.
Default build: http://eu.battle.net/d3/en/calculator/barbarian#WhRViP!aZU!abbcaZ
1. With frenzy you will get superb atack speed and crits are gonna fly around insanenly. Its kinda mesmerizing :D
I only change to frenzy with smite rune only when im fighting some hard minions.
2.Whirlwind is useful for aoe obviosly but also for 1 more thing. You can move through mobs and bosses. Very useful if you get surrounded or to get behind boss.
3.Dont use Ignore pain when you are low on life! Use it little before major bursts!
Combined with relentless passive skill it really saved my !@# many times.
4.Battle rage with damage is good for downing faster minions and bosses.
It is very important cuz when you activate berseker with 100% damage bonus, battle rage shines! Important for minions, because you only have 15 sec to burst them with berseker.
5.Why berseker? Because you CANT be frozen and feared. Combine it with ignore pain and your damage gets reduced hugely. Even you get bellow 20% rellentless talent will give you 50% dmg reduction soo again you will die very hard.
Pound of flesh for heal runes spam and heal, Ruthlesness for crit dmg bonus and relentless for survivability.