The main objective in poker is to win the pot. The pot is the collection of all the chips or money bet by players during a single hand.

There are two ways to win it. The first is by having the best hand when all the betting is over. This is called the showdown. The second way is to make a bet so convincing that every other player gives up and folds their hand, leaving the pot for you.

Poker is played with a standard 52-card deck. The deck is divided into four suits: spades (♠), hearts (♥), diamonds (♦), and clubs (♣). Each suit has thirteen cards, or ranks. In order from highest to lowest, they are: Ace, King, Queen, Jack, 10, 9, 8, 7, 6, 5, 4, 3, 2.

In most poker games, like Texas Hold'em, the suits themselves have no value. A flush in hearts is just as good as a flush in spades.

The Ace is a flexible card. It can be the highest card in a straight (Ace-King-Queen-Jack-10) or the lowest card in a straight (5-4-3-2-Ace). It's always high for pairs and other hands.

Knowing which hand is best is the most important rule in poker. Your goal is always to make the best possible five-card hand. Here are the official hand rankings, from strongest to weakest.

When two players have the same type of hand, like a flush, the winner is decided by the highest card in that hand. This tie-breaker is called the "kicker."

While there are many variations of poker, most follow a similar pattern. A hand begins with some players making forced bets, called blinds or antes, to create a starting pot.

Then, the cards are dealt. In Texas Hold'em, the most popular poker game, each player gets two private cards, called hole cards. The dealer then places five community cards face-up in the middle of the table for everyone to use. These come in three stages:

1. The Flop: The first three community cards.
2. The Turn: The fourth community card.
3. The River: The fifth and final community card.

After the hole cards are dealt and after each stage of the community cards (flop, turn, and river), a round of betting takes place. Players can check, bet, call, raise, or fold. Betting continues until everyone has either folded or put the same amount of chips into the pot.

If two or more players are still in the hand after the final betting round, the showdown occurs. Everyone remaining reveals their hole cards. The player who can make the best five-card hand using a combination of their two hole cards and the five community cards wins the pot. Then, the dealer button moves, and a new hand begins.

That covers the fundamental building blocks of poker. With these concepts, you understand the objective, the tools, and the basic rules of engagement.