Poker is a game of card-hands played with money (or chips representing it) where players make decisions on the basis of probability and psychology. The objective is to win a pot by having the best hand when all the cards are revealed. Although a large amount of chance is involved in the outcome of any particular hand, the long-run expectations of players are determined by their actions chosen on the basis of probability and game theory.
A game of poker is usually played with 6 or 8 players. Each player is dealt 2 hole cards and the betting begins. A round of betting is followed by the dealing of another 3 cards to the table, called the flop. Once this happens, there is another round of betting and the player with the best 5 card hand wins the pot.
In poker, players can also swap their cards out for new ones during or after the betting rounds. The process is called “discarding” or “mucking”.
Sometimes a player will try to be tricky and deceive opponents, even though this can be counterproductive. For instance, he may raise preflop with Kings, and then check a flop with a set in order to tempt his opponent into bluffing with a junk hand. This trickery is very dangerous and should be avoided.
Many players spend hours playing thoughtful, selectively aggressive poker, and then one flash of boneheadedness wipes them out. They have built up a stack, but the clueless drunks and newbies to their left and right keep raising with nothing and calling with junk.