Poker is a game that involves a significant amount of chance, but it also requires skill and psychology. The game is played with cards and each player puts money into the pot voluntarily based on their expected value of the bets they make. While luck is always a factor, players can control the amount of skill that outweighs it in their long-run expectation by making wise bets based on probability, psychology and game theory.
A hand is dealt to each player by the dealer. A player can either call the bet made by the player to their right (saying “call”) or raise it. A player can also fold if they don’t think their hand has any chance of winning. The highest card in a hand wins (a pair of kings beats a pair of queens).
Each betting interval, called a round, is begun when one player makes a bet. Each player to the left may then choose to call the bet (put chips into the pot equal to or higher than the amount raised), raise it, or drop it (“fold”).
The best way to improve at poker is to play and study a lot. Aside from improving your physical condition, you can read poker strategy books by Dan Harrington and Doyle Brunson or watch videos of Phil Ivey and Johnny Chan to learn how to play. You should also learn about the different poker variants to understand how bet sizes, position and other factors affect the game.