Anyway:
Rule #1 Talk to people
Rule #2 Go to the parties/off-con events. This is where the majority of the magic happens
Rule #3 Go to as many talks as you possibly can.
Rule #4 Do not get too trashed so that you cannot make the talks. Get up in the morning, and get to con.
If you follow those rules in that order (On top of the 321 Rule -- 3 hours of sleep, 2 meals, 1 shower) you should have a great DEFCON.
Welcome.
Have fun!