The kind of tourist you are determines the kind of tour you get, but unfortunately, I have learned, sometimes good people are bad tourists. In my 2-and-a-half years leading bicycle tours of Paris, I've met them all: the social-media addict who takes selfies in the middle of traffic, the whiny cyclist who complains about the hills, the happy-go-lucky adventurer who takes off on her own and immediately gets lost. Here are a few simple tips about how to avoid common mistakes on group tours and be the kind of tourist that tour guides love. Be prepared Sometimes there truly is nowhere…