You can't really learn how to use an AWP. You pick it up, shoot anyone in any part of the body and they instadie. Awful overused overpowerful weapon. Requires no skill what so ever.
takes skill to kill 5 people running at you with an awp and pistol, rather that spray an M4 and hope the wild spraying bullets kills some baddies. Theres 2 ways to play the awp, sit back and wait zoomed on a tiny gap and use your reactions, or go on the offensive, usually meaning lots of jump shots and no scopes

Also one of the most important things to staying alive with an AWP is to be good with pistols!