Okay, you've taken the first step. Here's what you have to know in general.
All games are table stakes.
That means if you run out of money in the middle of a hand, you can't reach into your wallet for more. It's a good rule of thumb to keep an eye on your chips. Somebody always has to start the action with a bet. Always protect your hand. Use one of your chips, a lucky charm, your ring or watch, anything that won't obstruct the game.