I did my first track day this year at Donnington and it was the best day of my life ..... does that sell it to you!
My friends and family are sick of hearing about
All you need to know beforehand is that its a blast, and everyone is in the same boat as you in the novice group ... oh and just because someone else has got all the gear, doesnt mean they know what they are doing.... often far from it
Just be confident, and take your time on the first few laps