Here's a couple more;

Don't do an across the starting line burnout if you have front brakes!!! Stay in the burnout area.

Most tracks have a guy that waves you into the water box when it's time. If they don't, don't just sit in the lanes until the cars ahead of you take off towards the finish line, you need to be sitting in the water box, ready to do a burnout, when the cars ahead of you take off. Watch the car ahead of you, when he's obviously finished doing his burnout, fifteen dryhops, and is pulling his car into the beams, it's time to pull into the burnout box.

Make sure that your neutral safety switch is working and make sure that your car is in park or neutral before trying to start it. I saw where a guy was letting his wife drive his car. She had been pulling the car forward in the lanes. When they were about one car away from their turn, she hit the key and nothing happened. In a huge panic, the guy jumps under the hood and starts the car at the relay. When the car started (the wife had left the car in gear) it lurched forward and almost hit some people.

This sounds simple, but, keep it in your head that if you go through the finish line and the throttle stays wide open, just turn off the ignition. I've seen guys panic and go a long way past the finish line before they realize what to do, some have even wrecked.