It's never too soon. I suggest you sign up for their Novice Day, it is a great way to get you introduced to track riding. The groups are very small (on purpose) to give the most instructor-student contact time.
Jennings is a great track; It's actually an instructional track. Everything is marked (corner numbers, brake points, turn in points, etc.) so you know where you are at all times.
The whole day you will go back and forth from classroom instruction to track sessions, then back to classroom for feedback, Q&As, then more insturction. They will start you from the very basics and you won't be in a position where you'll find yourself in over your head. It will do wonders for your confidence in the bike, but most importantly, in yourself as a rider.
You'll also get a certificate to do a regular track day for $100.00, normally it's $130 if you pre-register and $150 if you don't. The owner and the CRs will make your time and $ well worth it.
It's never too soon, get out there, learn, and have fun!
Hope to see you soon at a regular track day.
-Joel