At the Casino

House habits, so nothing catches you off guard.

Getting a seat. Walk up to the poker room desk. Give your name and the game you want, like 1/2 No Limit. They call you when a seat opens.
Buying in. Each game has a smallest and largest buy-in. Buy chips at the cage or from the dealer. Set your budget before you sit.
Your turn only. You raised to 6 and Zofia called. After the flop she acts before you. Wait for her. Acting early gives away information and can change what others do.
Words count. She checks. Your turn. In most rooms, what you say is binding. Say "bet 8" and you have bet 8.
One motion. Push your chips out in one motion. Going back for more without saying the amount is a string bet. The dealer can hold you to the first stack.
One big chip. Facing a bet, one chip bigger than the bet with no word counts as a call in most rooms. To raise, say "raise" first.
Your cards. Keep your cards on the table where the dealer can see them. Rest a chip on top so they are not swept away by mistake.
The rake. The turn gives you a straight. You bet, Zofia folds, and the 29 is yours, less the rake: the small cut the house takes from most pots. Here, 2.
Tipping. In most US card rooms, players tip the dealer a little after winning a pot. It is a custom, not a rule.
When in doubt. Ask the dealer. Rules differ by room, and dealers would rather explain than fix a mistake. Know when you will leave before you sit down.

Play money only. Room rules differ, so ask the dealer when in doubt.