Wikibooks Service

References

http://en.wikibooks.org/wiki/Wikibooks:What_is_Wikibooks
- Simply, Wikibooks is a collection of open-content textbooks.
  Because the word textbook' is open to interpretation, this document exists to help clarify which types of content are acceptable for Wikibooks. For example, The Complete Works of Shakespeare might be considered a textbook in an English Literature course, but such a text would be inappropriate for this site.
  Wikibooks is for textbooks, annotated texts, instructional guides, and manuals. These materials can be used in a traditional classroom, an accredited or respected institution, a home-school environment, as part of a Wikiversity course or for self-learning. As a general rule only instructional books are suitable for inclusion. Most types of books, both fiction and non-fiction, are not allowed on Wikibooks, unless they are instructional. The use of literary elements, such as allegory or fables as instructional tools can be permitted in some situations.