In all fairness though, we shouldn't make fun of the OP; this might be the first game like this he's played.
@OP: There are many different ways to control the game. The buttons on your hotkey bar have little numbers next to them; you hit those keys to get them to do whatever they're assigned to do. For example, if you have auto-attack on 1, charge on 2 and rend on 3... you hit the "3" key on your keyboard to make your character use Rend.
As for movement, you can either use the mouse or the keyboard (choose whichever you want), whichever you feel comfortable with.
And if you like clicking your ability icons, that's up to you too; healers actually do this I hear with some success. I don't know much of that; I never tried any serious healing myself.