A poker game is a gambling card game where the highest hand wins. Players must ante up something (the amount varies by game, but is typically a nickel) and then place bets into a pot in the center of the table. When betting comes around to you (it happens in a clockwise order) you can raise or fold, or you can bet with your current hand. Once all the players are done betting they reveal their cards and whoever has the highest hand wins the pot.
If you’re a beginner, I suggest staying away from bluffing until you learn the relative strength of your hands. Instead, work on improving your position and learning how to read other players for tells. This is a huge part of the game and will help you make better decisions going forward. Oftentimes a good read will be subtle and not come from the kind of physical poker tells you might see in movies (fiddling with your chips, scratching your nose, etc.).
One of the most important things to learn as a new player is to know your odds and how to calculate them. A big mistake that many new players make is calling with draws when they have worse odds than their pot odds. This can cause you to lose a lot of money, and is something I talk about in my Crushing the Microstakes video series.
Another great tip is to always play from a position of strength. By being in late position you have more information than your opponents and can make more informed decisions. This is the key to playing intelligently and minimizing your risk in poker.
Once the first betting round is complete the dealer puts three more community cards face up on the board (the flop). This increases the number of possible combinations that players can have and thus increases the strength of their hands. For example, if someone has two fives and the flop is J-J-5 then they have three of a kind and should raise.
A fourth and final betting round takes place on the river, which reveals the fifth and last community card and again increases the potential strength of hands that can be made. The player who has the best 5 poker hand wins the pot.