"A wonderful selection of textbooks and educational materials are available for free download at Textbook Media. Students can get free access to these materials by choosing 'sponsored' books, which include brief 'study break' ads. "
There are numerous sites that are now offering Tutorials and how-to guides for creating ebooks in iBook Author. As teachers are now comfortable with the idea of creating their own e-textbooks more and more people are looking for resources to learn how to build touch enabled books that take full advantage of the iPad capabilities. Inserting video and high resolution photographs is one thing but how about inserting 3D manipulatives and models that are touch sensitive. Here is a list of some of the resources online. If you know of other good ones please add them in the comments section and we will update the list.
"This site, which is dedicated to the free and open dissemination of knowledge, is a great place to find free textbooks and other educational materials. "
"This site lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available over the Internet.
Throughout this site, other terms are used to refer to a book, such as ebook, text, document, monogram or notes. "