I bought The Startup Owner’s Manual many years ago and I’m still using it heavily. First, if you don’t know Steve Blank, stop for a minute and check his blog. The guy is a startup guru and this book is #1 Amazon Title in “Entrepreneurship” category.
It took me sometime to read this book because I thought it would follow much of the thoughts I’ve seen in The Lean Startup (Eric Ries) and The Startup Owner’s Manual (Steve Blank). Indeed, once it is based on The Lean Startup methodology, Ash has naturally included its elements in Running Lean.