First time going to the track. Any advice?

I'll pass on what I did, with the caveat that I am the least knowledgeable drag race person on the forum. I went down last year to get a baseline on my car. I bought it and spend a while getting it from questionable to truly road worthy. When I got there I had to ask directions and procedure from everyone. The cashier pointed me to tech, and thanks to the video from @318willrun I was good to go. I proceeded to the gate leading to the start lines. When I got to the guy directing traffic I told him this was my first trip and I had absolutely no idea what I was doing. He was quite helpful letting me know the procedure.

And then I proceeded to get my *** kicked all night long, which I expected. A 66 Valiant, stock slant six, three-on-the-tree, original survivor from the factory isn't going to scare anyone. I made 8-10 passes and was getting the hang of it when I quit. It's a mighty 20 second car. As mentioned above, a first trip isn't about setting the world on fire. It's about learning the ropes, getting some practice in, and seeing what happens.

Good Luck!