Wikibooks is a Wikimedia community for creating a free library of educational textbooks that anyone can edit. Wikibooks began on July 10, 2003; since then Wikibooks has grown to include over 38,776 pages in a multitude of textbooks created by volunteers like you!
Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning. Wikiversity has over ten thousand learning resources, many of which are of the highest repute, and it is rapidly growing.