The object of the game is to make the best 5 card poker hand from the 5 community cards on the table and your own 2 cards, which only you can see. The community cards are dealt out during the hand with betting rounds in between.
A game consists of playing hands, where each hand is comprised of alternating rounds of revealing community cards and betting.

The highest possible poker hand is the Royal Flush. It consists of a Ten, Jack, Queen, King and Ace, all of the same suit.

A combination of both a straight and a flush. The cards must all be of the same suit and they must run in value (e.g. 5,6,7,8,9). If more than one player has a Straight Flush, the player with the best Highcard wins.

This hand is made up of 4 cards of the same value (e.g. 4 Queens). If more than one player has Four of a Kind the highest value Four of a Kind would win.

This hand is made up with 3 cards of one value and two of another value e.g. 3 Jacks and 2 Eights. If more than one player has a Full House the winning hand would be the one whose 3 cards are of the highest value, or, failing that, whose 2 cards are of the highest value.

A Flush is when the hand contains 5 cards of the same suit e.g. 5 Hearts. If more than one player has a Flush the winner is the player with the best Highcard.

To make a Straight the cards must run in value (e.g. 7,8,9,10,J) but it does not matter what suit they are. If more than one player has a Straight, the player with the best Highcard wins.

This hand is made up with 3 cards of the same value e.g. 3 Queens. If more than one player has a Three of a Kind the winning hand would be the one with the highest value Three of a Kind.

Two pair of the same value e.g. 2 Nines and 2 Threes. If more than one player has Two Pair, the winner is the player with the highest pair value. If both players have the same pairs the player with the best Highcard wins.

One pair of the same value e.g. 2 Nines. If more than one player has One Pair, the winner is the player with the highest pair value. If both players have the same pair the player with the best Highcard wins.

The Highcard is the highest value card that is in your hand that is not duplicated i.e. not a Pair, 3 of a Kind or 4 of a Kind. If one or more players has the same Highcard the next highest Highcard will be evaluated until a winner is found.
Game Play
** Note: You cannot win from another player more than the amount you bet.
Terms
Dealer Button A chip that marks where the dealing begins. This moves forward clockwise one player each hand.
Small Blind An automatic bet that must be paid by the player after the dealer button at the beginning of a hand.
Big Blind An automatic bet that must be paid by the player after the small blind at the beginning of a hand. During the first betting round this is the amount players must match or raise to stay in the hand.
Hole Cards The two cards that are dealt to you. Other players cannot see your hole cards unless they are revealed at the end of the hand to determine the winner.
Betting Round There are 4 betting rounds during a game. A player can choose to check, call a bet, raise a bet, or fold their hand.
Flop The first 3 community cards dealt out during a hand after the first betting round.
Turn The 4th community card dealt out after the second betting round.
River The 5th community card dealt out after the third betting round.
Check Make no bet, allowing the action to pass to the next player. You can check only if no bet has been made in the current betting round.
Call Match the current bet amount.
Raise Raise the current bet amount.
Fold Discard your hole cards and lose any chips you have bet during the hand.
Allin Bet your entire stack.