Okay, some simple basic tips.
1) Do not drink while you are gambling, or at any time where you have money in your possession. You will loose it all.
2) Slot machines are for suckers, and aren't really all that much fun.
5) Always tip EVERYONE at the place you're staying. Well. Word gets around, and you'll get better treatment, better service, and have a better time if you ever need something.
7) Roulette is a good game where you'll get lots of action over a long period of time - especially if you play the line.
8) No, the slots by the doors don't pay off better. None of them pay off well. The machines have no memory - so no machine is ever more "due" than any other. Each pull of the lever (or push of the button, these days) is an independent event.
11) If you win, even a little, walk out. There'll be time to play more later.
1) There is no shame in ordering sprite. And if you are drinking non-alcoholic beverages while gaming you'll probably be drinking more, take this in to account when tipping the waitress
2) Hella agreed
5) On the floor tip (or "toke") with chips. Attempting to do so anywhere else in the casino isn't allowed and makes you look like a chump. For certain games (craps) it's considered bad form to toke directly. You should place a dealer's bet. The standard practice is to play a dollar on a high risk roll, but you'll be more liked if you use low-risk/low-return bets like the Pass line. One $5 Pass bet will get the respect that ten $1 Hard Ten bets.
7) Roulette doesn't have the best odds (craps) or the worst (keno) but it's a fun table game with a good group vibe so you can get more fun betting less money. Just remember not to bet red and black at the same time or they will ask you to leave the city.
8) But in general close to the doors are easy games to suck you in, the further in you go the higher the minimum bets and the more serious the games.
11) Agreed. I start with $100 if I win $25 over that it goes to the side and it's locked away. Repeat ever $25. If I have less than $50 in the tray after a shooter I leave regardless of how I'm up total. Even if I've put away $200 in on the side if my "live" money gets below $50 I'm gone.