Hi
first start by reading this. then, imagine this: we have 6 courses now and 7th coming soon, and each course has different bunkers from other courses which play differently.
also 3-4 different sands from 15/20 to 50/60, so all of them also play different
i guess what I am saying is, it's not exactly simple to explain how to hit the shot from just a bunker. but, once you read that post and then practice on different courses/holes, you will get a deeper understanding how spin works and such out of bunkers.
-wgticon