Poker is a card game played by two or more players. The object of the game is to win a pot, which is the sum total of all bets made during a single deal. This may be achieved by having the highest-ranking hand or by betting large enough to prevent other players from calling your bet. Depending on the game rules, some players are required to place an initial amount of money into the pot before their cards are dealt; this is called a forced bet and is known as the ante, blind, or bring-in.
In many forms of poker, the dealer deals each player five cards and then turns them face down. Each player then acts in turn by placing chips (representing money) into the pot. The first player to act may raise his bet, call his bet, or fold his cards.
There are a lot of different strategies and tactics in poker, but most involve understanding the odds of getting a certain type of hand. Some of these hands are suited pairs, three of a kind, straights, and flushes. Other hands are higher in rank, such as a full house or four of a kind.
Another strategy involves understanding the value of position. The later you are in your position, the more information you can gather about the actions of other players before you have to make a decision. Players in early positions have to act first and therefore take on more risk.