Horbuchkostenlos.de is one of the best audio book websites hörbücher kostenlos in Germany with more than 200,000 useful titles such as: Lord of the Rings, Harry Potter,...

A selection of books that add a variety of content.

Very much informations. Very useful informations. Goes deep in the facts and details. Very reliable (Calvin Jones, Park Tool—an questions? ;-). Easy to reproduce in the basement on the bikes. Also teaches mechanical skills. I got this paper version in german language in the basement. The BBB-4 i got as an eBook in english. I really would recommend this book* to everybody willing to learn a lot about maintaining a bike. Every bike. Mountain, road ... * To compare: I got the Unior Bicycle Mechanics Book 1 and 2 too. Those two are unable to hold the candle to Park Tool's Blue Book. No Explanations on details. It's kind of an user manual type of books ...

No weakness so far as I could find any.