13 year old wanting to start track racing

Hi.
You could try contacting the manchester velodrome and they could tell you when there may be junior open days and training and you will meet other teenages who will advise you.
I would not buy a bike yet, go do some beginners sessions on a hire bike first until your sure, and then I would advise maybe buying a second hand bike initially, they are always available from people who have outgrwon theirs or just given up.
You may wish to try the veloriders forum on which nearly all the track riders are on, including juniors, also many track coaches are on there.

Best is to join a club that regularly participates in the velodrome training sessions - you can hire bikes at the velodrome

You mean a skinsuit you can just wear cycling shorts and top though once you ride track regularly you would find a skinsuit slightly more comfortable for the crown jewels :-)

Just spotted this thread. There should be a Development Officer (or whatever they are called) for your area, and there are some very good clubs in your area that will point you in the right direction and encoutage her. Elder Noodlette went along to track cycling a couple of years ago (not Manchester) and I found that everyone was very welcoming and helpful, hope you find likewise.