The first short chapter of this book outlines the method. This bit is useful, if brief and general.
The remainder of the book purports to show how the method is applied by describing projects that the author has applied the method to. It doesn't. This is what drove me to toss the book into the bin. The author's first project was learning yoga. The chapter starts with page after page about the history of yoga. I DON'T CARE ABOUT THE HISTORY OF YOGA. I want to learn how to apply the method you have described. The history of yoga doesn't matter. THIS IS CRUFT AND SHOULD HAVE BEEN CUT. There follows a lot of descriptions of yoga positions and so on NONE OF WHICH MATTER. I didn't buy this book to learn yoga. I bought it to learn how to acquire skills faster.
I skimmed the rest of it but it really seems that the first introductory chapter, which could have been published as a pamphlet, contains all the useful information in this book and the rest is padding.
As potentially beneficial this books' proposed strategy maybe, I can't get over the fact that the author has not even tried let alone tested is own proposed strategy. It's all well and good to propose a theory based on what appears to be sound research and enquiry but why write a book about it if you yourself are not willing to practice let alone test your own theory. To add insult to injury I just spent an hour reading about to how the author has this long list of things he wants to do and how with his strategy his going to " pick up his trombone and learn to play it in 20 hours " - it's like he wrote an argumentative essay but every example he has is speculation and it undermines his own points. Instead of being presented with " here's my strategy on learning skills in 20 hours and here is how it has helped me learn this, this and that, it's all - with this strategy I CAN learn this and that and I can do that cause this the best strategy - seriously!? and his charging for this, he must think his readers are suckers or something.
In summary , is this book useless ? No there's some merit to some of his points but Is it useful ? - I wouldn't know the author hasn't bothered to try his own strategies and provides no examples of how such strategy has yielded results , but he sure does let you know how it could help him clear his learning to do list cause he's a "learning junky " and he just LOVES to learn - he has got so many things he wants to learn and his not doing a single one of them. This book is an untested hypothesis and the authors main objective becomes clear to write and publish a book with minimal effort and make money fast. Lucky for myself amazon has a real good return policy but i still wish i could get that hour of my life back, i will not be reading a single book by the hack again.