In this book a reader should find a clarification of the foundations of lean enterprise which are lean principles and wastes. The book covers in detail a definitions of lean manufacturing, clarifications of lean principles, explanations of value adding activities and non value adding activities, explanations of activities that are necessary and activities that are unnecessary, and a clarification on the nine types of wastes that hinder the creation of values in organizations worldwide. There are cases, examples, exercises, and problems that enable a practical and theoretical learning experience.