http://www.youtube.com/watch?v=0WOUwxwz93kThis Youtube video by Swifty has some tips on how to improve your play by using key-bindings. There is a caveat though: he says using key-bindings will primarily help out your PVP play, but many others as well as myself believe using key-bindings for PVP
and PVE will also help you become a better player.
Reasons to use Key-bindings1.) Faster ability responsiveness.
2.) Faster panning vs. Keyboard turning.
3.) Faster target acquisition and engagement.
4.) Faster and more enjoyable play.
Swifty is an Arms Warrior from the Darkspear server with a 2200+ 2v2 Arena rating. He has a plethora of videos on his Youtube page with useful tips on how to play better.