This video, Open Educational Resources: What and Why (3:27) provides an overview of OERs, open textbooks, and the kinds of content you may wish to include in your open textbook or manual.
All publications published as part of the Open Education Alberta initiative must be covered by one of the four Creative Commons licenses
Pressbooks is an open source platform based on Wordpress that allows you to create and publish textbooks, manuals and other educational resources. U Lethbridge is a member of Open Education Alberta, a collaboration of Alberta post-secondary institutions, which provides registered faculty and students with a full-featured (enterprise-level) Pressbooks account hosted by Pressbooks. If you would like to register for an OEA Pressbooks account, please reach out to the U Lethbridge contact on the Open Education Alberta contacts page. As well, anyone can sign up for a free basic Pressbooks account that provides up to 5 MB of storage.
This video, Introduction to Using Pressbooks (2:56) gives a brief overview on how creating and publishing a book on the Pressbooks platform works.
Some Pressbook manuals and guides you may find useful:
Some resources to help you make your open textbook or manual accessible to students with perceptual and other disabilities: