SPARC: Create Change
SPARC has been a long time leader in the effort to make scholarly communication as widely distributed as possible. They tirelessly provide educational experiences, they organize information and they support open access publishing in many ways. SPARC has kept their Create Change site spruced up with new ideas, and have been continually expanding as they learn from experience in shaping and observing the emerging open access movement.
Their Stay Informed page includes an excellent list of resources for keeping up with the changing face of scholarly communication.