Warriors use rage as a resource

　　Warriors use rage as a resource. Rage is generated by specific attacks (Mortal Strike for arms warriors, Bloodthirst for WOW Gold fury warriors, and Shield Slam/Revenge for protection warriors), by autoattacking in Battle and Berserker Stance, and by Charge and Battle/Commanding Shout for all warriors in all stances. Rage is spent on attacks and survival abilities depending on your role and spec.
　　Warriors have three combat stances, Battle Stance, Defensive Stance, and Berserker Stance. These are abilities that are toggled on and left on, without any need for you to maintain them, until you choose to change to another stance. Battle Stance generates the most rage when you deal damage, Berserker Stance allows you to generate rage from damage dealt and damage to your character, and Defensive Stance increases threat, which is the game's method of determining which character in an encounter is attacked by the enemies being fought. You should use the proper stance depending on your role and spec - if you're in a dungeon as a damage dealer, don't use Defensive Stance.
　　The primary warrior stats are strength and stamina, with secondary stats like hit, expertise, crit and mastery becoming more important as you reach maximum level. Tanks also look at dodge and parry, and don't care much about crit.
　　Warriors begin the game able to wear up to mail armor. At level 40, warriors gain plate specialization and the ability to wear plate armor.
　　There was a time where, in order to level outside of dungeons, warriors had to pick one of the two DPS specs, but that's no longer the case. You can level in any spec, even if you don't intend to tank. Protection has a lot of survivability as you level in the spec, while arms and fury use damage output to kill things faster to minimize how much damage they take. Protection is the weapon and shield spec, arms is the big two handed weapon spec, and fury uses either two fast one handers or two big slow two handers, depending on your preference.