Well, you can always search for a list of probabilities so that you know how good your hand is, also, don´t go in fear, that just makes it easier for him. If you want to trick him, search for common body language signs of lying, learn those signs, NOT to read others, but to confuse them. once you get there, start by playing SAFE, just bet if your hand is good, and don´t go betting a lot, now, after some wins or losses, when you get a really good hand, bet a lot and use the body language you learned, try to appear as if you where not conscious of your body language. After he or they bet you their money and you take it, abuse the body language of lying, this will confuse them and make them feel uncomfortable with their game. Remember, the only way to hide something through body language is by using different body language.