Try playing Double KP Openings as much as possible as White and Black.A good way to learn openings is to play the same opening as White and Black when you can. Don't worry about memorizing lines against every possible opening you might encounter. It's more important to understand the basics first, such as developing all your pieces on good squares and not making unnecessary pawn moves.
I'd suggest playing the Italian Game for starters 1.e4 e5 2.Nf3 Nc6 3.Bc4 because you'll also start learning some basic opening principles with this type of opening. The Four Kts Game is another opening to consider, or just about anything else except I'd avoid the Ruy Lopez until you get some understanding of some other Double KP Openings first. Look around for articles right here (under "Learn") and blogs about whatever opening you're trying to learn.
Figure out what your strengths and weaknesses are, along with you do and don't like to play. Don't buy any specialized opening books ie books on one particular opening - yet.
http://www.chess.com/blog/NimzoRoy/chess-opening-principles?_domain=old_blog_host&_parent=old_frontend_blog_view
.i always confuse about my openings.so i am asking there.Which is the best method to learn openings