So I'm thinking about getting a copy of this book. Is there much difference between the editions? I can get a 2002 edition for example. The 2007 edition appears to have around 50 more pages and is actually called "Cyclecraft: The Complete Guide to Safe and Enjoyable Cycling for Adults and Children". The 2002 seems to be for Adults only. Which is it best to go for? I've even seen a 1988 version, which I presume is going to be really outdated now.