Every other lean management book encourages you to use "Value Stream Mapping" to improve your processes. The idea is that, having seen what is wrong with current processes, you will somehow "solve problems" and "improve the flow". In practice, unfortunately, it's rarely so simple. The real challenge of Value Stream Mapping is not just drawing the "actual state", but coming up with a robust "future state", and then to visualize it on the shop floor - which is a skill in itself. And in fact, there is very little published about it, apart from this remarkable workbook.
As a lean consultant, helping clients to come up with a transformed process and to put on paper an "ideal state" has been a recurring stumbling block, if only because there are so many new things to explain: leveling, kanban, material handling - all at once! This workbook has helped me immensely because I now get clients to work through it step by step to clarify and share their understanding. It's both general in its scope and explanations, and very specific in how to attack the problem. Indeed, it's one of the very few lean books that gets into the real nitty-gritty of how to redesign a flow beyond telling you to "just do it".
I can't recommend Creating Level Pull strongly enough to all those who try to really implement lean (as opposed to just talk about it). This is it: this is where lean really happens: capability vs demand, creating the pacemaker, controlling production. I'm really impressed with it because it explains clearly and simply some tricky and counter-intuitive lean mechanisms, which are at the core of just-in-time. Definitely a key to successful lean implementations.