Vlad has a great point Bragi if you can not develop your opening then you are fucked! I would recommend learning two or three different openings to have a few options. I personally like to use gambits, they make your opponent think they get the advantage when usually they dont. In a gambit you give up a piece, usually a pawn, to gain the advantage in position. A good opening that isn't too hard to learn is the queens gambit. Kings gambit is also a good opening unless you are playing a high level opponent because it's busted (high level opponents just take your piece and gain advantage in position) another similar to kings is Evans Gambit. That one is way old school and a lot of players do not have a answer to it. But a really high level player that is familiar with the opening will fare far better. Sicilian defense and Sicilian opening are good ones to learn as well. Not as deadly as kings and Evans but doesn't have as many holes in it either.