Everything in moderation as the new guy. Take some shit, give some shit... never give more than you take. Ask some questions, but not too many. Get a little drunk, but not so much that you suck on your Intel-Weenie's toes in the hot-tub. Kiss a little ass to the front office, but never in front of the whole Ready Room.
Now hear this!!!
The second most important FNG rule ever: Realize that everyone you will ever work with has goods and bads. Nobody is ever perfect, and nobody is ever a complete asshole. You can learn something from everyone (even if it's that you don't want to be like them). You should take as many goods from people as you can and develop them yourself. Spot as many bads as you can and leave them behind. Always take every experience and see how you can improve upon yourself as both an Aviator, and an Officer. Don't forget that you're an officer first, and an avaitor second. Being a man that others look up to and want to be like is way more important than being a good aviator. Aviation can be trianed, but if you're a natural asshole, nobody will ever give a shit about you.
The most imporant FNG rule that will save you for your whole career is: ALWAYS ALWAYS ALWAYS tell somebody senior to you. You will never have your ass handed to you by the CO if your department head said it was OK. You'll never have the Master Chief light YOU up in HIS office if you called the MO and told him about Airman JackNutz "incident".
NEVER BE THE LOW GUY WITH A SECRET! Chances are you will cost somebody a lot of pain and paperwork because you were too lazy to call the Skipper and see what HE wanted you to do. No matter how small it may seem, just pick up the phone and call somebody who really knows what's going on. Even if it's 0300, everyone out there would rather have you call than find out Monday morning that AN JackNutz was down at county jail for the last two days and YOU KNEW ABOUT IT BUT DIDN'T TELL ANYBODY!!!
One last thing... if you're married, don't f-ck around when you're on cruise. She will always find out and nobody you ever work with again will respect you. I know a guy who if he was on fire, I'd walk across the street and get a wet baseball bat to put him out with for what he did to his wife.