Warhammer Online is wisely steering clear of the conventional level system where you gain experience that results in an increase in levels as you progress. Instead, it is using a skill-based system not entirely dissimilar to Asheron's Call 2, but hopefully more varied. This is the score: choose a career path, choose your base skills, then work your way up a skill-tree, taking the path which most suits your style of play. If you want to use magic, follow the tree accordingly; if you want to play a warrior and whack things on the head, the same applies.