The number one thing you need to remember to do is have fun.
I'm only about 6 months deep into my airsoft career and the people are always awesome (occassional jackasses). I always have lots of questions about gear, gun, and games and everyone is always willing to help. I love a game where I know almost no one, half way thru the game, i know names and build tactics, then afterwards sit around the campfire with guys from both sides of the war and swap stories.
Welcome Dude! Get some!