Play the poker game with which you're most familiar. This will give you a chance to acclimate to casino poker without feeling lost.
Keep in mind that seven card stud poker is usually the game of choice among those who are home players, law of averages concludes then that you'll find more stud players in the casino who don't play very well.
Remember that at the casino, you'll have to play more wisely against more skilled competition.
Play at tables you can afford. Go into a game at a level and with a stake where you feel as though you could play for about three or four hours. If your feeling outmatched, keep it simple, leave the table.
For a $1-$4 spread limited game, a $100 bankroll should suffice, but if your into a $3-$6 fixed limit game bring closer to $300.
Poker is not a game where you want your senses dulled, and you will definitely be offered free drinks. Simply don't overindulge.
Always keep your cards to yourself. Information is king at the poker table, so be sure to keep it to yourself.