Get a full face with a visor. Fire is why.
Slow and steady.
Handel the wheel like it is something you care about. A death grip is not good.
Look as far down the track as possible. And this means in both directions. This is the #1 thing in becoming a good on track driver. It is a big part in what I call on track awareness. Once you can do this you can start anticipating things. You can not do this if you can not see the things first.
Learn your gages and learn to check them once a lap (or more).
Listen to your instructor.
Try and get as many ride alongs as possible.
Try to get other instructors in your car. Different people will focus on different things and have different teaching styles.
Relax Relax Relax Relax Relax Relax Relax Relax Relax and remember breath. Once the newness and excitement of just being on the track goes away only then can you start learning and focusing on what the instructor is telling you.
Slow is fast. Really. Focus on just learning the line and the brake points. Keep it at 9 or even 8 10ths. Speed will come. It will happen faster than you think just don't focus on it. If you only focus on speed you will remain slow. Focus on smooth, looking down track and developing on track awareness. Develop these skills and speed will come naturally and quickly.
You are going to get sensory overload. At the end of the weekend you will know you had a blast but you will not remember a lot. After a session with an instructor bend there ear for a moment and take some notes (get a notebook). What you did good what you need to work on and what you thought was the funest part of the track. Also note down things about the car. How were the brakes? Did they fade at all? Any weird noises? Were your mirrors working for you? I have found that the position you have mirrors for the street is not what you will want on the track.
Ergonomics of your cars interior can also play a big roll in developing on track awareness. Take not of this after a session and note it in the notebook I suggested above. If you are comfortable in the car you don't have to focus on that thing that bugs you and you can put all your attention to what the car is doing and what is going on outside the car.
Don't be afraid to pull into the pits early. Fatigue is a real thing. Particularly at the end of the day and especially at the end of the 2nd day. There have been many a day where I wanted to go out in the last session but I passed just because I realized I was tired both mentally (the hardest to admit to) and physically.
Mental fatigue. It is a real thing. Don't ignore it as this is when mistakes happen. Like exercising your muscles you are going to be exercising your brain in ways you never have before.
Feed your body and your brain. Electro lights and water and food are important.
No alcohol (or other stuff) the night before. Ok this is my personal rule as I noticed that it takes the edge off my ability the next day.
Get a good nights sleep the night before. I know it will be hard to do as you will be excited but try. And have a good dinner the night before.
Bring a friend to help with things like inspecting the car between sessions and just to help with things. Again you will be tired at the end of the end of the day and having a friend to help is a god send. Also they can inspect the car while you are in classroom sessions. Even if it is just checking all the fluids and tire pressures.
Have Fun. This is going to be the best day of your life up till now. Remember it is not a race it is a school you are a student and are there to learn.