Let's now look at the betting procedure. At the end of each betting round each player must be either in with the highest bet that was made by a player or folded, which means he quit. It costs every player the same amount of chips to stay in the game.
Remember: You can always fold!
But how do we reach the end of a betting round.
If there are no bets to you (It is checked to you)
Bet (setzen): You can put in one bet into the pot. Now all the players must call that bet by also putting in the same amount of chips, or else they must fold.
Check (schieben): You can choose not to put in any chips into the pot. If no one bets, then the game continues and everyone is still in the hand. If someone else bets, then you have a decision to make...
If there is a bet to you
Fold (aussteigen): You don't put in any more chips, but you are out of the hand and cannot win any chips. Any chips you have put into the pot up to this point is lost.
Call (mitgehen): You put in chips equal to the amount bet so far. You stay in the hand. Play continues and the next card is dealt, unless someone else raises. (If there are no more cards, then there is a showdown)
Raise (erhöhen): You put chips into the pot equal to the amount bet so far, plus one bet. Now, all the other players must call your raise or fold. They may also reraise you.
If there is more than one player left after all the cards have been dealt, and everyone has called on the last round of betting after that card is dealt, then those players showdown their hands. Whoever is holding the best poker hand wins all the chips in the pot. If there is a tie, then all tying hands split the pot in equal amounts.
Win by default
If everyone except one player folds, then that player gets all the chips in the pot. He does not have to show his hand to the other players
Reraise: Someone else raises you, but you feel that you have a very strong hand, and you want to make your opponent pay to stay in the hand. Then you can reraise him and force him to put in another bet to stay in.
Check-raise: You hold a strong hand, and you are greedy. You want to take more than just one bet from your opponent. So you check, your opponent bets, and you raise him. Now he calls, and if your hand is as good as you think it is, you just won two bets from him. Check-raising is a powerful tool, but it can be dangerous, because your opponent might also check. Then you win no chips from him. Or, he might have an even better hand then you, and he might reraise you.
Check-and-call: If you have a decent hand, but you think there is a good chance your opponent might have a better one, you may wish to avoid a raise. In this case, you can check-and-call.