Your first time!
Well don't rush it, and be nice and gentle. Consideration is the key, and don't try anything without mutual consent. Maybe agree on a secret word which you know will mean 'stop it now'. Geronimo is a favourite of mine.
With regards to the race, try
www.lemans24hrs.info for a lot of general advice, and ask here if you want some good 'ole homegrown specific q's answered.
Have a whizzo time.
H
If you have any problems with your sex life, we would be more than happy to help out too.