How to prepare my car for the dragstrip?

thats a good primer for first time at the strip, but i would add that you should make sure every nut and bolt is tightened, then go through and check everything again. the last thing you want to do on your first run is break something or oil down the track. you will need to install a catch-can for coolant if you haven't already. no need for a roll cage unless you are in the 11's, i think but if i remember correct, anything faster than 13's requires a helmet. I would do some back-road testing first to make sure you are more-or-less in a proper state of tune. take everything out of the car that you can, every hundred pounds you remove from the car is worth a tenth of a second.
most importantly, have fun with it! its a blast making passes, you won't want to stop!
-Tim