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.
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.