i just start playing world of warcraft and i wish t know how or what class deal great damage ? thank you

K C made a few good points, but I'm going to disagree with the last bit. When choosing a class to level up as fast as possible, rogues and feral druids wouldn't be on my list. Ranged classes have many advantages when questing. There have been countless times where a melee type character was trying to take my kill and failed to do so because I could hit the target from 40 yards away. Once I saw the person had those intentions, I could then take every monster in the area before the melee guy can get near them.

Every class in the game is built to be able to do decent damage. They are all pretty balanced, so you should just pick what seems most fun or interesting to play. Now if you're looking for bigger damage numbers in single attacks, that's a bit different. For melee classes, warriors probably deal the largest numbers on average. As for the ranged classes, mages will probably pump out the biggest values.

Each class has their own advantages/disadvantages, but I would suggest getting a warrior-like class or maybe a nightelf. I would be clearer, but statistics show that you will probably quit the game before you even get to lvl 20.