+1 with aicabus and Eden,

Go on a club ride and see how it feels. See where you are in your conditioning... Lot of clubs require you to volunteer at the races and other events. Like sign-up... if you don't mind the extra hours you may have to commit, being attached may be for you.

Being unattached and new to the "scene" you might be viewed as a leper.

Ride in a group and train with the boys. You'll learn about bike handling in a pack even on a weekend training ride or mid week evening training ride. You need to learn to "jump" coming out of the corners... so its bit more than just riding hard and fast.

Lastly don't lose the sight of fun even in racing.

enjoy and lots of luck. Remember only one person gets to win