CLICK HERE!
Read that. You can skip the gear section for now, but read the spec and rotation sections. That should make you set for life.
Edit: some general tips, I guess. You have guard, so use it to protect the healer/ball carrier/important guy. You usually end up carrying the ball / defending objectives, but if you gear for dps, you can also effectively pressure the healers and just kill the other guys. Always remember to get full use of your control abilities - electrocute, whirlwind, overload, spike. Your most used abilities have 10m range, and wither slows, so you can somewhat effectively kite melee. Force speed and force pull gives great distance closers. You basically have awesome utility, and should have no fear going 1v1 against any class.