Go and check out the casino. Get your players card and ask staff questions you may have, they are usually very friendly and will answer them. Walk around the slots
, maybe play a few. Head over to the table games and watch the play at blackjack
, 3-card, etc. Maybe put 25 bucks on RED, you might double up. Walk around some more and learn the layout.... restrooms, food, bar..... AND Poker Room.
Walk in like you own it. Make your way to cashier for chips (cash games) or buy-in for a MTT. I think Cash games are more intimidating at first so I would sign up for a $50 or so MTT and play and get a feel for the room and game.
Just be yourself at the tables and play your game. Watch the play and be ready to act when it is your turn.... there are no blinking lights or beeps telling you so, just other players ... When it is your turn guard your cards and see what you have. Act and play like you would normally, stay within yourself.
Your first few orbits will be antsy the first time you play live.... they are for everyone. After you've watched a few orbits and played a few hands, you will start feeling more comfortable and before you know it, you're on your way to becoming a seasoned live player.
Good Luck and have a great time....