Spin Class 101 - Shimano SH-56 Multi-Release SPD Cleats
The most prevalent Spin bike used in gyms/fitness centers across the country is the Schwinn JohnnyG spin bike. This bike also features a double sided pedal that often has an SPD pedal on one side and either a Look pedal or a detachable toeclip on the other side. I recommend using SPD cleats on your cycling shoes and the SPD pedal on the Spin bike. You will need to get some help from either your intructor or a friend to mount these cleats properly.