My wife is getting her first road bike this week coming up... so, the other day I bought her a book titled: The New Cyclist edited by Ben Hewitt(I think)
anyways.... it has the basics and some not so basic stuff. She's enjoying it so far.
FYI: it's the first book i've ever bought on cycling(excluding magazine's)
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Bikes: C'dale, Trek, Cervelo and Santana