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. Put it on top of your cards. The last thing you want is the dealer scooping up your hand accidentally and tossing it away. It's unethical to discuss your hand during play even if you folded.