Peter Suber's Open Access

Peter Suber's 2012 book "Open Access" is now – appropriately enough – openly available from the publisher, as announced by Peter on Google+:

I'm happy to announce that my book on OA (Open Access, MIT Press, 2012) is now OA. The book came out in mid-June last year, and the OA editions came out one year later, right on schedule. My thanks to MIT Press.

As it says on the tin: essential reading.