Originally Posted by chewie49
I would like to ask one more quick question: In the pre-flop there are always 2 rounds of bets if someone raises? or if some simply call, there must be 2 rounds? Does this also applies post-flop?
Suppose the first three people check, then somebody bets. Everybody then has to make a decision whether to bet the same, bet more or fold. So those three people who checked will have to decide whether to stay in the hand by matching what has been bet, raise or fold. That's why it appears to be a second round.
Similarly if they bet the minimum bet (limp), and someone raises, they will be given the option to match the increased bet, re-raise or fold. If they re-raise then it will go around again, giving everyone that is left in yet another decision to make.