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to determine licensing and use restrictions before you use any resource.
Open textbooks are textbooks that have been funded, published, and licensed to be freely used, adapted, and distributed. These books have been reviewed by faculty from a variety of colleges and universities to assess their quality.
Open Education North Carolina (OENC) is an NC LIVE initiative that aims to reduce the cost of higher education for North Carolina students by providing free, open textbooks for the most frequently taught courses across NC’s 2- and 4-year colleges and universities.
Free textbooks (aka open textbooks) written by knowledgeable scholars are a relatively new phenomenon. Find a meta list of 200 Free Textbooks, and check back often for new additions.
The LibreTexts project is a multi-institutional collaborative effort to improve education at all levels of higher learning by developing Open Access Resources. In a nutshell, it's a bunch of people making the world a better place by sharing the world's scientific knowledge, and you can help!
Other Sources for Open Textbooks, Open Books and Teaching Resources
Milne Library Publishing at SUNY Geneseo manages and maintains Milne Open Textbooks, a catalog of open textbooks authored and peer-reviewed by SUNY faculty and staff.
Mathematics open textbooks, many of which are free to use. All the books have been judged to meet the evaluation criteria set by the AIM editorial board.
Foreign Language Resources. The Center for Open Educational Resources & Language Learning (COERLL) is one of 16 National Foreign Language Resource Centers (LRC's) funded by the U.S. Department of Education. The overall mission of these federally-funded centers is to improve the teaching and learning of foreign languages by producing resources (materials and best practices) that can be profitably employed in a variety of settings.
We publish open content electronic textbooks that are freely available from this website. We focus on content development and Web distribution, and we will work with relevant authorities to facilitate dissemination by other means when bandwidth is unavailable or inadequate. The goal is to make textbooks available to the many who cannot afford them.