Hey, since my bike was stolen, I have decided to buy a bike part by part (partially to learn). I bought some powertap wheels and a Cervelo S2 frameset. I am hoping to learn how to tell what cranksets/bottom brackets fit on this. I also am wondering what I need to know about buying a stem that works, and whether a typical clamp on derailleur works. I am planning on getting Ultegra 6700 group, but may end up with a different crankset.

Any help is appreciated!