When you are in the advanced level of a poker game, it is the time for you to increase your stake. But be careful to increase the stake level step-by-step. In the earlier stages you need to observe the board and cards which needs more concentration while in the advanced stage try to read the minds of the opponents which needs to understand their psychology.
Even though it need some time read others minds, initially keenly observe their moves and reactions and slowly try to guess their move. This will give you an idea of the type of the player whether he is loose/tight, aggressive or passive. A aggressive player is one who risks to the higher if he has a good hand and a loose player will stay until he lose something. So these loose aggressive players are very easy to handle. But tight aggressive players are dangerous, and so take their call seriously.
Most of the time they will fold the game. Playing against a loose passive player is not easy because they cannot be judged easily. Play as a tight razz poker player which will end a good result. A tight passive player will lost for a long time and make you confuse whether is waiting for a call or he has a good hand. As he is tight player he will fold the game most of the times.