In addition to the existing paperback, my book Kanban from the Inside is now available on Kindle via amazon.com, amazon.co.uk, amazon.de and amazon.fr and (no doubt) other amazons also. A PDF e-book is also available via the djaa.com store.
In a two-sentence summary: understand the Kanban Method, connect it with familiar models such as Lean, Agile, and Theory of Constraints, and learn how to implement it step-by-step in your organization. Learn practical techniques to apply the Kanban Method, always considering the context of your situation and the people involved.
Read it, then leave a review!