I just have to say that I love reading posts from people who are riding their first 20-miler, doing their first group ride, etc.. I remember all my firsts and how exciting they were as well as the great sense of accomplishment that came as a result. For new cyclists, I really recommend Selene Yeager's book, A Woman's Guide to Cycling. I learned so much by reading it and was able to avoid a lot of newbie mistakes because of it.