Read along with Lawrence Solum a he discusses Free Culture:

This is the first of eight posts on Lessig’s book–a sort of blogospheric book club. You are invited to read along, and to send your comments on the book, my posts, or on the comments of other readers.

The class reading schedule may be a bit agressive if you are not an academic (faculty or student) but if you are at all interested in intellectual property issues and the internet you will be well served to join in.
Via Lawrenc Lessig.
Update: Lawrence Lessig discusses the rationale for the free offering.
Update (3/31): Tech Law Advisor notes that a Wiki of Free Culture has been created.