The pictures are large in colour and accurate (nice close-ups). There are decent technical cutaways diagrams when required. The details cover the aspects of common modern bikes. This includes things like elastomer forks as well as newer oil forks and air (although it is a bit vague on air forks). I found the sections on derailleur adjustments and wheel bearing replacements to be very good, as these are the things I do on a regular basis. I also have "zinn and the art of mountain bike maintenance" which seems to get a lot of 5* reviews, but in my honest opinion, this book is better as it covers a smaller more popular range of components (maybe more UK specific?) The text is also more precise and the diagrams clearer. If you are concerned I would check them out first in a bookshop as they are two totally different books, but if you do decide buy this I don't think you'll be disappointed. It’s quite a good price too!