You need to be at the circuit before 8.30. This way you'll have time to get signed on and briefing is usually starting as close to 9.00 as possible.
Don't forget your LICENSE, if you haven't got that on the day, then you won't need to be at the briefing!
You'll be signing on and briefing in the Cafe, which is easily found at the end of the main track that runs from the gate to the pits.
What car will you be driving. And are you staying locally on Thursday?
If so then why don't you make your way to The Haywain Motel to meet with some of the others.