I got got this from Zach Even-Esh about 5 years ago and I'm re-reading it (again).
Without a doubt this is a resource that stands alone. Many people have tried to copy Zach, instead of simply learning the most effective ways from Zach himself.
I have also trained with Zach Even-Esh and have been certified as an Underground Strength Coach, Level-1.
That's why I promote and market this book with confidence!
Get your copy here