Personally i would not reccomend that you make a warrior as it is the hardest class to play.

But if u do by some chance make a warrior heres some tips.

1. Go prot, because fury & arms are for grope questing.
2. Rember to learn your new skills every time you level.
3. Update your gear every 5 levels.
4. Instead of questing alot, just run dungens because they give fast xp and some cool loot.
5. If you find it hard going from level 1-20 on a warrior just delete your character and make a new one with a different class.