Poker is a game of chance and luck, but it also requires considerable skill. This is because poker relies on reading your opponents and changing your strategy accordingly. It is also important to know when to fold a hand, as well as having a good level of comfort with risk-taking.

While the exact origin of poker is unknown, it likely has its roots in a 16th-century German card game called pochen or poque (both meaning “to knock”) and the French game brag. It has also been suggested that it may have derived from the Renaissance game of as nas or the English game of brag, which both incorporated bluffing.

Depending on the rules of your game, one or more players must place an initial amount of money into the pot before cards are dealt. This is known as posting and is typically done by the player to the immediate left of the dealer, a position that is called the button. After each hand, the button moves clockwise to the next player.

In addition to reading your opponents’ betting patterns, you should also pay attention to the size of their chip stacks. This can help you identify conservative players who often fold early, as well as aggressive players who can be bluffed into raising their bets. A high-stack player will likely have a strong hand, so it is best to play cautiously against them. By contrast, a short-stack player will probably have a weak or bad one, so it’s a good idea to try to call their bets.