Instructions
Gain experience from killing enemies and completing quests. Earn enough experience to reach Level 36. The amount of experience necessary to reach the next level is displayed as a purple bar at the bottom of the screen.
Travel to any major city, such as Stormwind for the Alliance or Orgrimmar for the Horde.
Right-click any guard. Select "Class Trainer," followed by "Warrior" to be shown the location of the warrior trainer on your map.
Right-click the warrior trainer.
Click "Whirlwind." Click "Train" in the bottom right corner of the screen to learn the skill. It costs one gold and 62 silver to learn this skill.
Attack any enemy to raise your rage meter located in the top-left corner of the screen as a red bar next to the portrait of your character. Continue to attack enemies until you have amassed 25 rage points.
Click the "Whirlwind" icon in your character's ability bar located at the bottom of the screen to use whirlwind with your currently equipped weapon, like an axe. Your character spins in place with his axe, damaging all enemies around him.