I found so much from this launchpad: CCC OER. From the website: "CCCOER is a growing consortium of community and technical colleges committed to expanding access to education and increasing student success through adoption of open educational policy, practices, and resources. We provide a community and resources to learn about the evolving practice of open education." This is the group that posts the listserv and Google Group where I often find guidance. At the website, I like the browse-by-subject for repositories and produces in specific disciplines.
For a wide net, see Open Washington; then go to "Find OER" and then click "Find OER" again to choose from the drop-down menu. Many, many refer-out links with quick summaries. Found a lot of the informaion in this LibGuide by following link after link here. For librarians only.