We've posted on our z-gammon blog about opening moves in the past -- but think it is worth mentioning again. In particular, when you read about a suggested opening move, try and think about the strategy behind the move.
Check out these articles and links on backgammon opening moves.
GNU Rollouts by Tom Keith (Cubeless)
Comments by Kazaross (Cubeful)
Snowie Rollouts by R Cerutti
Kit Woolsey on Opening Moves:
Phil Simborg on Opening Moves