I know that this thread is a couple months old but here's somemore information for anyone that's interested.

Racing Schools - How can I become a race car driver? - RacingSchools.Com

Racing Schools - RacingSchools.Com

I also just started to read Drive to Win by Carroll Smith. This book is amazing!!! He really breaks down what it takes to get into racing in the first chapter and he makes it seem impossible. Reading this book is a great first step to really understanding if you have the determination to really get into road racing.