Poker is a card game that involves skill and strategy. It can be played with one or more players and is often played in tournaments. There are many different variations of the game, but they all share some common aspects. For example, all of them involve betting on a hand of cards and usually use chips as units of value. The most common chips are white, but there are also red, black and blue chips. Each type of chip has a specific value, usually in increments of five or more white chips. The player who puts in the most chips wins the pot.

Before a hand is dealt, all players must contribute a minimum amount to the pot, called an ante. In the subsequent betting intervals, a player may bet any amount up to and including the sum of all previous bets. A player who places a bet that exactly meets the previous bet is said to call, and a player who bets more than the previous bettor is said to raise.

It’s important to be able to read your opponents in poker. This goes beyond just knowing the typical nervous habits like fiddling with a ring or chips, and includes more subtle details, such as the way a player moves his hands when making a decision. It’s also necessary to be able to spot “tells” that indicate when an opponent is holding the best hand and when they are trying to bluff.