If you're new to Lean, this book is an invaluable source of background examining the 5 principles of Lean and then showing the reader how Lean was implemented in a number of varying organiusations.I work for a large, complex government department which is beginning it's Lean journey and as a Lean Practitioner, this book gave me a thorough grounding and a big headstart on many of my colleagues - well worth having in your Lean Library :D