The way to improve your board vision/calculation skills you should work on solving chess puzzles. There is a good program on chess.com which you can train on. The other option is to buy tactical training books. Try to solve the puzzles by looking at the position and working it out in your head. If you cannot do this set the position up on a chess board and move the pieces. Eventually you want to be able to solve the positions without moving the pieces as this is more like a game like situation.
im trying 2 learn how 2 b the best i can i find myself losing more than winning what r some tips and stratagies on winning or making the best moves and when to move certain pieces someone please help me.