From XanEdu, AcademicPub is the world's largest provider of copyright cleared content, with over 8 million pieces of text, media & images from hundreds of publishers. See this useful FAQs page for more information.
Use this site to create, share, publish, and read digital books that engage and support diverse learners according to their individual needs, interests, and skills.
CreateSpace CreateSpace provides free tools to help you self-publish and distribute your books, DVDs, CDs, and video downloads on Amazon.com and other channels
OpenStax CNX - Rice University
OpenStax CNX is a dynamic non-profit digital ecosystem serving millions of users per month in the delivery of educational content to improve learning outcomes.
PressbooksEDU helps educators create books that are accessible on all platforms through open textbooks and open educational resources projects, as well as through academic publishers such as The University of Minnesota Press, Tufts University School of Medicine, Harvard Business Review Press and Fortress Press, and more.
Some of these online textbooks are open-licensed electronic versions of print books. Others are self-published online books, or course notes which are so thorough that they serve as an alternative to a conventional textbook.