Bookboon is a free service offering free full-length textbooks, travel guides, and business books in digital form. The textbook section of Bookboon offers more than 500 digital textbooks. On Bookboon there are etextbooks available for twenty-five subjects, but the bulk of the etextbooks are focused on Economics, Engineering, and IT. You can browse the title lists to find a book you want or you can search Bookboon by keyword. Bookboon hosts books written in five languages. All of the books are free to download. The only catch is that you have to provide an email address before you can download the books.
I just downloaded the full text on Office 2010. Check it out!
