CuriousCyclist1,
All velodromes have new rider programs and many have "junior" programs for people age 8 - 17. They answer all of the questions you might have and often help you get started. Many even provide a bike to ride.
If your velodrome has a website, email address, and/or phone number, contact them (or if you are under 18, have your parents contact them) and introduce yourself and tell them that you are interested and would like to find out more information. People do this all the time. They should be prepared to give you some good advice. This info might even be on the website already.