Poker is a card game with quite a bit of skill and psychology involved. While a lot of people believe that poker is purely a game of chance, when you introduce betting and the idea that winning hands have better odds than others it becomes much more of a game of strategy.
There are many different variants of poker, but all involve a standard pack of 52 cards with four suits (spades, hearts, diamonds and clubs) and an ace. There are also wild cards which can take on whatever suit and rank the player desires. The highest poker hand wins. Ties are broken by looking at the highest unmatched pair or the highest kicker (the fifth card in a four-of-a-kind hand).
When a player is dealt their cards they must decide whether to call or raise. They must also consider their position in the hand (this is called position).
After a betting round is complete the dealer puts three cards on the table that anyone can use (these are called the community cards). Then another betting round takes place.
When a player has a good poker hand they will try to keep it secret. They will not show it or talk about it, if they have a good hand they will usually look more alert and sit upright in their chair. They might flick the cards in their fingers, glance at the other players, draw in a deep breath or make rapid eye movements.