There are lots of things you can do, and since I am a real amateur I will give only the things that helped me.
- Get a teacher. IRL or online. I had some on ICC, (search on google of it). If you get a good teacher he will guide you into the game and you will be surprised to see how much you can learn.
- Do chess puzzles. Search on google for a site called ChessTempo. Its free and contains lots of puzzles and exercises.
- Learn all the chess combinations like forks, pins, skewers, undermining, discovered attacks, etc
- Play long games, like postal chess. Those kind of games you can think a lot on the moves and that seems to be very helpfull. Theres a site called Stansco, also free.
- Try to develop pieces as soon as you can, castle fast, and when you think of a move, think on what your opponent will do after that. Always try to think 2 or 3 moves ahead.
Those are still helpfull for me. Hope you get better. ;)
Good luck and dont give up on chess.
I want to get better at chess, but sometimes I loose a lot.
Should I keep playing?
Sometimes I feel very bad when I loose too much.
Is there some tecnique? O should I rest for a while?
Thank you very much.