I'm adding a couple of helpful links:
1. Hand Rankings
2. Glossary & Lingo
3. Rules to Various Poker Games
Here's how you play Texas Hold'em... (from Pokerpages.com)
Texas Hold 'Em is a seven card poker game with simple rules that a beginner can easily learn and begin to play immediately. In spite of the simplicity, it is a fast and complex game that takes skill and practice to master. No wonder it has become one of the most popular forms of poker played today.
Texas Hold 'Em uses a disc called a dealer button to indicate where the cards are to be dealt. Prior to the deal, the two players to the left of the button place live bets called the small and large blinds. It's called blind because it's made prior to seeing any cards. It's called live because it counts as part of any further bets in the first betting round.
The play begins with two cards dealt face-down to each player. Action starts with a betting round beginning with the player to the left of the blind bets and continuing clockwise around the table. Players may bet, check, raise, or fold in turn. The large blind has the privilege of last action and may check or raise the bet.
Three community cards are then dealt face up in the center of the table and another betting round takes place beginning with the player to the left of the dealer button. Another card is dealt face up followed by a round of betting. The fifth and last card is dealt face up and a final round of betting takes place.
Players remaining in the hand will then show their cards and the winning poker hand will be awarded the pot. Any combination of hole cards and community cards may be used to make the best five-card poker hand.