Thankfully, growth hacking isn’t some proprietary technical process shrouded in secrecy.
But the veil is thick enough so that this whole long article doesn't give the slightest hint what the book is actually about. Sounds like it is a typical executive bookshelf volume on marketing or sales, long on inspirational quotes and feel-good stories, and short on any kind of advice that's not already obvious to all practitioners.
But who knows, maybe I'm wrong about it; it's just that from the article, there's no way to know.
...growth hacking is more of a mind-set than a tool kit.
Oh, I see, so there isn't anything actually operational you can get out of the book after all. No practices or anything like that, I suppose. But change your mind-set and you can succeed. Very nice.
...how even authors are using the principles in their book launches.
Sadly the principles don't appear to have worked on me