Be sure you know the opening principles:
https://www.chess.com/article/view/the-principles-of-the-opening
Play long games against players within 200 to 300 points of your rating.
Read a book and solve tactical puzzles.
Some books:
http://www.amazon.com/Winning-Chess-Strategies-Everyman/dp/1857443853
http://www.amazon.com/Winning-Chess-Endings-Everyman/dp/1857443489
http://www.amazon.com/Winning-Chess-Tactics-Everyman/dp/1857443861

kinda dont win often.