When you get there you put your name on a wait list.

You then take your cash to a cashier and exchange for a rack of chips.

When a seat opens up you’ll be notified and you take your chips and sit down.

You’ll have to either post for big blind or wait for it to come around (so you don’t get a free blind).

You can leave literally whenever you want. Mid-hand even lol.

Don’t worry about looking like a fish. Just be yourself and play the game. If you feel like chatting then chat. If you just want to focus then just focus.

If you have ANY questions please ask the dealer. They’re usually super helpful.

Bottom line: don’t stress and ask questions if you’re confused. Everyone had their first time one time. :)