So I did my first trackday with Class Rides, where they altnernate between track time and classroom time. It was awesome. For anyone on the fence thinking about it, I can highly recommend it. It was so great to be able to focus only on your own riding and how your bike behaves without all the distractions in traffic.
At this particular group there were a lot of different types of bikes and riders of all ages and body types.
I had a friend film me with a helmet-cam. You can check it out here:
http://letsriiide.com/trackday.html
It was at Streets of Willow (CA), the track is short and has a lot of different curves and only two straights where you can get some speed.
I'm defenitely going again as soon as I can.