Peter Suber is one of the leading authorities on Open Access. He is the Director of the Harvard Open Access Project, a senior researcher at SPARC (Scholarly Publishing and Academic Resources Coalition), and a Fellow at Harvard's Berkman Center and Office for Scholarly Communication.
Budapest Open Access Initiative: The Budapest Open Access Initiative is an international effort to promote Open Access publishing online.
Open Access Overview: A brief overview of open access from Peter Suber.
Open Access Week: A website with resources for celebrating Open Access week every October.
This guide was originally created by Prof. Debbi Smith, Former Collection Strategies Librarian.
The "Benefits of Open Access" graphic by Kingsley and Brown can be found here.
The graphic illustrating the differences between CC licenses by David Hopkins can be found here.
The graphic illustrating the different things which can be done with different CC licenses is taken from a larger infographic which can be found here.