Poker is a card game played by two or more players and involves betting. In most games players must first ante up (the amount varies by game) and then bet into a central pot; the highest hand wins the pot. Poker can also involve bluffing, which is done by making a bet when you don’t have the best hand in order to influence other players.

The cards used in poker are a standard 52-card pack, plus one or more wild cards (also known as jokers). They are ranked from high to low as Ace, King, Queen, Jack, and 10. There are four suits: spades, hearts, clubs, and diamonds. Some poker variants also include other ranks and suits.

While many people think that poker is a pure game of chance, it requires significant amounts of skill and psychology. Players place bets based on expected value, and often bluff to improve their chances of winning the pot. The game is also an excellent mental workout, improving critical thinking and decision-making abilities and fostering social skills.

Another important part of poker is reading your opponents. This can be as simple as picking up on their tells, such as fiddling with chips or wearing a watch, but is also done through your opponent’s actions. Learn to read your opponents’ actions and be on the lookout for their pre-flop aggression, as this is a great way to determine how strong or weak their hands are.