Textbooks in the Open Textbook Library are considered open because they are free to use and distribute, and are licensed to be freely adapted or changed with proper attribution. The criteria for including new textbooks in the Open Textbook Library are:
- All content must be openly licensed. We accept textbooks licensed with GNU and Creative Commons (CC) licenses, with the exception of the CC ND (No Derivatives) component. CC BY is recommended. Go to Creative Commons for more information about selecting a license for your work.
- Must be a complete textbook available as a complete portable file (e.g. PDF, EPUB).
- Must be in use at multiple higher education institutions, or affiliated with a higher education institution, scholarly society, or professional organization.
- Must be an original textbook (not a derivative of another textbook). Possible exceptions to this criteria are modifications that reflect the needs or context of an entirely new audience. For example, the textbook has been changed in such a significant way that it is now relevant to a new country, profession, or has been translated into a new language. Authors or publishers will be asked to demonstrate significant changes to the original text.
Welcome to the world of Git. I hope this document will help to advance your understanding of this powerful content tracking system, and reveal a bit of the simplicity underlying it — however dizzying its array of options may seem from the outside.
A site that starts with explaining NAND gates and from that basic principle teaches you how to build a complete computer.
A website that lets you search the catalogs of many independent booksellers for rare, out of print, and unusual books.
A search engine which indexes where you can purchase over 150 million rare, out of print, new, used, and import-only books online.
An archive of free-as-in-beer science textbooks, course material, lecture notes, and whitepapers for anyone to download. Updated fairly regularly. Contains material on physics, computer science, chemistry, medicine, astronomy, engineering, mathematics, and more for students of all ages. Even some material for elementary school.
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Rice University is releasing under a Creative Commons license college level textbooks written by professional textbook writers. The texts have passed through a peer review process as well for vetting and fact checking.
A blog of free and open educational and cultural resources from around the Net.