If you are a beginner at poker, playing conservatively and at low stakes is a good idea. This will help you preserve your bankroll until you are strong enough to win bigger games. It will also allow you to observe player tendencies more closely and learn how to read opponents. Watching players for tells (eye movements, idiosyncrasies, hand gestures etc) and noticing their betting behavior is one of the first things that you should focus on as a new player.
A pair is two matching cards of the same rank. A full house is three matching cards of one rank and two matching cards of another rank. A flush is 5 consecutive cards of the same suit. A straight is five cards in a row that skip around in rank but are all from the same suit.
The dealer deals the first betting round of 3 cards. Then each player has the chance to check or raise or fold depending on the game. After everyone has raised or folded the dealer deals a fourth card face up on the board, this is called the turn. After the turn, each player can once again raise or call or fold.
When deciding whether to call a bet on a draw, it is important to balance out the pot odds and potential returns to see if they work in your favor. If they don’t, then it is best to just fold. This will save you a lot of money in the long run.