The First 20 Hours

The first 3 chapters introduce the method, the remaining 6 showcase how the author used it to learn radically different skills such as developing websites, playing Go, or windsurfing. While it was good to have examples of application of the method, they often went into way too many details (e.g. it was interesting to read about the origins and rules of Go, but ~15 pages? it's not what I'm here for).

The method itself is introduced in a very well structured way and explaining the reasoning behind every step.
All in all, a nice read, it could have been written in a long blog post rather than a book. The TED talk in which the author appears is very nice, by the way!