So in order to improve your poker gambling strategies and to beat those who play against you - There are a few important tips that might help you, the beginner poker player:
1.You have to know how to control your feelings (that's how nobody will see on your face if your nervous of losing for example).
2. Know the probability of all the poker game moves.
3. You must control your body language (for the very same reasons, you do not want anybody to guess how good is your poker hand).
4. To read body language of others, they might not know how to control it, and you can win them by looking at their faces and trying to guess how good is their poker hand.
These useful tips gives you, the poker player, an important advantage while playing, assuming other players are not aware of them as well.