What are Open Textbooks?
The Short Answer: “Open textbooks” are free, online, open-access textbooks. The content of open textbooks is licensed to allow anyone to use, download, customize, or print without expressed permission from the author.
Examples of Affordable, Free and Open Textbooks
This page contains a vetted list of affordable, online educational resources that might be used in place of an expensive, commercial textbook. The focus of this list is usability; each resource was recommended by at least one professor who has assigned it.