Poker is a card game that involves strategy, chance, and psychology. It can be played by two to seven players, although it is usually best with five or six. The game is played with a standard 52-card English deck, and ideally two decks of different back colors are used (one in play, one shuffled next to the dealer). Some games may also include wild cards or jokers, although they are not considered part of the regular game.
Once each player has received their 2 hole cards a round of betting begins. This is initiated by 2 mandatory bets called blinds placed into the pot by the players to the left of the dealer.
After the first betting round is complete the dealer puts down 3 community cards face up on the table that everyone can use, this is called the flop. Then another round of betting begins. During this time it is important to learn how to read the players at your table, particularly their tells. A tell is something a player does that gives away their hand, for example fiddling with their chips.
If you have a strong hand, especially a pair, you should always stay in to see the flop. This will force weaker hands out of the pot and will give you a better chance at winning a big pot. However, if you have a low pair like A4s or K10s then it is often a good idea to just fold on the flop.