Ask him to show you how the brakes work and how the derailleurs work, just to give you a basic idea of where the cables run and what happens when you tighten them or loosen them. It makes it a lot easier to adjust, lube or troubleshoot them if you have a working knowledge of what goes where and why.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett