Poker is a card game played by players for chips (representing money). There are many different games of poker, but they all share some similarities. Players bet on the strength of their hands, and the highest hand wins. Players can also try to win by making bets that other players will not call. This is called bluffing, and can be very successful.
The game is usually played with a standard deck of 52 cards, although some games add jokers (wild cards) or other special cards. There are four suits, from high to low: spades, hearts, diamonds and clubs. The highest hand is a royal flush, which is Ace, King, Queen and Jack of the same suit. There are various other high hands, and low hands such as three of a kind and two pair.
Each player begins by placing an ante into the pot, then is dealt five cards. There are then one or more betting intervals, depending on the game variant. In each betting interval the player closest to the dealer places his bet first.
Observe experienced players to learn their betting patterns. They will tend to be either conservative or aggressive. Conservative players fold early and can be bluffed into folding, while aggressive players are more likely to raise their bets, especially when they have good cards. You should be able to tell which type of player you are facing, and adjust your strategy accordingly.