Thanks.
Best advice I can give you is not to try and win the race in the first 2 corners. You wouldn't believe how many times I have seen a Novice race red flagged, before everyone even makes it to T2. I have seen it take a 4th try to actually get the entire field into T3 off the start. Just get going, get through T1/2 safely and get on with it. You cant win the race in T1, but you can damn sure lose it.
At the end of the race, the fast guys will be in front and the slow guys will be in the back. That is ALWAYS true, no matter what. Gaining 1 position off the launch isn't going to affect the outcome of a Novice race. There are times when the whole top 10 of the Expert field is running lap times within 1-2sec of each other, and in those cases you HAVE to be super aggressive off the launch or you might be stuck behind someone and not be able to get by them. But that isn't the case in the Novice races. Lap times vary a good bit, so there is no reason trying to get crazy off the launch. It will all work itself out.
You will get faster in your first race, I guarantee it. I dropped a full 2 seconds in my first race. There will be faster guys, that is part of it. Don't worry about them. Do you thing and they will get around you. When they do, try to tag onto them, even if it is just for a few corners. You will learn something every time.
Racing is just so much different than track days. In either case you are going around the track on your bike, but that is where the similarities end. The intensity, aggression, competition, etc...there is nothing like racing.
You will probably be SUPER nervous in the 10-20min before the race. Don't worry, that is normal. Hell I still get nervous. I reckon it is more excitement than nervous, but I still get it. It will get better once you actually get going. Halfway through the first lap and you wont feel all of that anymore, you will just be riding and racing and doing your thing.
Aside from that, get plenty of sleep the night before and start hydrating as soon as you wake up. Eat a good meal the night before with lots of complex carbs (pasta, baked potatoes, etc). If you are like me, your nerves will be all over the place and you will be busy during the day, and wont be able to eat much. So you want to make sure you do some carb loading the night before so you don't run out of energy. I would get some of those carb/energy gel pack things. Each one of them has 20-25g of complex carbs and can help keep you energized during the day if you don't/cant/wont eat properly.
Good luck