Clipless pedals are a cleat system that connects the shoe directly to the pedal. You buy cycling shoes that pemit you to attach the special cleat that is supplied with the pedal. It is important to have your foot securely attached to the pedal so that you can push and pull in all directions. That bike is perfectly suitable to get you started in track racing. The main thing is that it has the proper geometry for use on banked tracks, which it does.