You should understand basic opening principles, study tactics, tactics, tactics, and basic endgames studies. I recommend you leave specific openings until you are a class C, B, or A player. By that time you will know what type of middlegame positions you are comfortable with and you can adopt whatever opening systems that lead to those positions.
What openings should I know?
Sort:
As a not very good chess player, what openings should I know? I was just wondering, because I don't really know any openings, but sometimes I play people who play some opening that I have no knowlege of. So I was just wondering what openings should I know, and at my level, what kind of openings should I be playing?
If you are black and your opponent plays 1. e4
Scholar's mate and all its continuations don't always work that well...
I know from experience.