This tutorial is the culmination of nearly a decade of studying and writing about software freedom licensing and the GPL. Each part of this tutorial is a course unto itself, educating the reader on a myriad of topics from the deep details of the GPLv2 and GPLv3, common business models in the copyleft licensing area (both the friendly and unfriendly kind), best practices for compliance with the GPL, for engineers, managers, and lawyers, as well as real-world case studies of GPL enforcement matters.

It is unlikely that all the information herein is necessary to learn all at once, and therefore this tutorial likely serves best as a reference book. The material herein has been used as the basis for numerous live tutorials and discussion groups since 2002, and the materials have been periodically updated. They likely stand on their own as excellent reference material.

However, if you are reading these course materials without attending a live tutorial session, please note that this material is merely a summary of the highlights of the various CLE and other tutorial courses based on this material. Please be aware that during the actual courses, class discussion and presentation supplements this printed curriculum. Simply reading this material is not equivalent to attending a course.