An increasing number of textbooks are available electronically online (eTextbooks) that are 100% free to use, print, or remix. You can search through collections of these open textbooks online, and then add the hyperlink for a particular book to your Learning Management site.

• Open Textbook Library via the University of Minnesota - Open textbooks are textbooks that have been funded, published, and licensed to be freely used, adapted, and distributed.
• OpenStax is a part of Rice University - Offers freely licensed, 100% free textbooks to read online or download in multiple formats, including some classroom resources as well.

• Find e-Textbooks through the Library's OneSearch page.
• MERLOT by California State University - The MERLOT system provides access to curated online learning and support materials and content creation tools, led by an international community of educators, learners, and researchers. A catalog of open textbook materials from various sources. To find open materials, limit the material type to "Open Textbook".
• Directory of Open Access Books - It is a joint service of OAPEN, OpenEdition, CNRS, and Aix_Marseille Universite. This directory includes peer-reviewed books published under open access licenses by academic publishers.
• Open SUNY Textbooks Open SUNY Textbooks is an open textbook publishing initiative established by State University of New York libraries. These faculty written textbooks fall under a Creative Commons license. 
• OER Commons - OER Commons is a dynamic digital library and network. Open Textbooks section offers many textbooks.
• WAC Clearinghouse - The WAC Clearinghouse is an open-access, educational website supported by more than 125 contributors, institutional sponsors, and the Colorado State University Open Press as well as more than 180 volunteer editors, editorial staff members, reviewers, and editorial board members.