Poker involves a mixture of chance, skill and psychology. The best players are quick to calculate the probability of a winning hand and have patience, read other players, and can adapt their strategy. In addition, the game requires concentration and focus. This allows the player to observe small tells and changes in their opponent’s behaviour and body language, and then make decisions based on that information.

The first round of betting starts with the person to the left of the dealer putting in an amount of money (the ante) into the pot. There are then forced bets from the other players that can match or raise that ante. These bets are called blinds and bring-ins.

When the cards are dealt, players might choose to check, which means not putting any chips into the pot. Or they might say “call” to put the same number of chips into the pot as the player before them. They might also raise the amount they are betting, if they think their hand is stronger than their opponent’s.

If you have a strong value hand it is usually better to bet aggressively, which forces weaker hands out of the game. This way, you can inflate the size of the pot and get more money out of your opponents. It is also useful to be the last player to act when you have a good hand, as this will prevent other players from calling your bets with bad hands.