Here is a list of sites I recommend about open education and open educational resources, I will attempt to organize it well, and keep it up to date. It is by no means exhaustive.
Open Policy & OER Advocacy
Open Policy Network – http://openpolicynetwork.org/
Centrum Cyfrowe – A Polish NGO working on open policy – http://centrumcyfrowe.pl/
Creative Commons – https://creativecommons.org/
Creative Commons Open Education (keeping an eye out for their new Open Education Platform work – https://creativecommons.org/about/program-areas/education-oer/
Lumen Learning – http://lumenlearning.com/
SPARC – http://www.sparc.arl.org/
Open Access Week (each year in October) – http://www.openaccessweek.org/
Open Educational Resource Repositories
Open Education Consortium – http://oerconsortium.org
Open Education Consortium – Open Textbooks – http://oerconsortium.org/discipline-specific/
Merlot II – http://www.merlot.org/merlot/index.htm
BCCampus – Resources – http://bccampus.ca/resources/
BCCampus – Open Textbook Project – http://open.bccampus.ca/
JISC – http://www.jisc.ac.uk/content
MIT Open Courseware – http://ocw.mit.edu/index.htm
OpenLearn at the Open University UK – http://www.open.edu/openlearn/free-courses
Work I Follow:
WikiEducator and OERu – http://wikieducator.org/Main_Page
Bonnie Stewart – http://theory.cribchronicles.com/
Dave Cormier – http://davecormier.com/
Stephen Downes – http://www.downes.ca/
Jim Groom – http://jimgroom.net/
ds106 – http://ds106.us/
MisFits – http://aj-leon.com/pursuitofeverything/about/about-poe/