1. Get as many laps as possible as a passenger before going out in your own car, just to get a "feel" for the place.
2. Drive at your own pace.
3. Keep an eye on your mirrors and pull over to let people over-take on the LEFT (just like at a track day).
4. Don't get over-confident.
5. Have fun .

Obviously ensure the car has been serviced before hand, full set of pads, good tyres etc (just like a normal track day).