Open-source textbooks on any topic, in any language, available to anyone, anywhere, for free. Wikibooks,set up on July 10, 2003 is a project of the Wikimedia, the folks who brought you Wikipedia. Consisting of over 11,000 books, the textbooks on the site are all released under an open content license; that means that they are free forever. No one can keep you from using these materials, modifying them or distributing them. Also, the license guarantees that any works that are derived from these materials will be similarly free to modify and distribute, forever. Free textbooks and more info can be found at http://en.wikibooks.org
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