I normally check the sticky schedule in this forum, decode the abbreviations to see who is hosting the event, then go to their web site to learn the registration process.

https://www.tamparacing.com/forums/a...-schedule.html

Three are plenty of events that are hosted at the Airport that never make their own thread in the forum. For instance, the FCRC is holding a test and tune this weekend (12th) and I'm going with a group of about 6 cars. It's going to be cold...