As someone that gets a lot of questions about track days, and which ones to go to, here are some of the track day organizations I help support:
I work with OnRoad OffRoad Cycles doing trackside suspension setup for almost all events that do not conflict with a CMRA race weekend.
I am an instructor for Elite Track Days, and make as many events as I can.
I work with OnRoad OffRoad Cycles at Lone Star Track Days as well, but usually only the day before a race, or when Ride Smart is having an event back-to-back with Lone Star.
All of these organizations provide quality instruction, and a safe environment to learn more about the art of riding a motorcycle.