The Barbarian is a melee fighter, with an emphasis on mighty weapons, powerful melee attacks, and taking hits. Barbarian attacks focus on raw power and damage. Barbarian skills are fueled bu Fury, a resource that increases when the Barbarian attacks or is damaged.
You can find additional information regarding the barbarian at http://us.battle.net/d3/en/class/barbarian/. Please keep questions tagged diablo-3-barbarian to questions specifically about the barbarian class such as their skills, traits and equipment.