To piggyback on Pfren:
If you follow sound opening principles, you will be playing "book" moves most of the time. The best moves have been worked out before, not by some rote memorization, but by analysis.
Play according to the principles of democratic development of the pieces (pawns aren't pieces, their piece wannabes), control of the center, protecting the king and trying to keep your opponent from achieving those three goals, all while watching out for tactics, and you will be playing an opening that is right for you!
You can play ANY opening, and you don't have to know much about it- quite the opposite. Just knowledge of the opening fundamentals is more than enough. Factly, the less you know about pattern book moves, the better.
Picking an opening should be your last priority right now, as well as in the foreseeable future.