Jay,
Welcome to your first National. I'm sure you'll have an excellent time, especially if you take Scott's advice and wander the entire show.
If you're there on Thursday, come join us for an evening pre-war event right next to the show:
https://www.net54baseball.com/showthread.php?t=350606
One of the best things you can do is meet people. I've been so fortunate to make good friends over the years, and we watch out for things on each other's want lists.
Cheers,
Steve