My first time out to a track was as a NASA volunteer. I didn't have the money to partake in a track event, so I also hitched a ride over to the track with a friend who was doing HPDE1.
Even though I wasn't driving that weekend, I still learned plenty about driving. I was put to work helping out Timing and Scoring, so I got to see how the run groups were managed, where people made mistakes, what goes on during emergencies, etc.
Perhaps the most enlightening and entertaining moment of the weekend came when the HPDE1 group had a drill where random cars were black-flagged. We black-flagged my buddy and counted the number of times he missed the flag; he passed by half a dozen black flags before coming into the pits! (Now I try to remember, with modest success, to keep an eye out for flags.)
Find the right line of work during a NASA weekend and you can learn a lot about track etiquette, skills, techniques, etc. Getting free track time is icing on the cake.