Peer reviewed, openly licensed, and totally free online! OpenStax textbooks come with free, aligned student and instructor resources. Explore our library of resources and decide what …

Study English composition online free by downloading OpenStax's Writing Guide with Handbook textbook and using our accompanying online resources.

OpenStax offers free college textbooks for all types of students, making education accessible & affordable for everyone. Browse our list of available subjects!

Study calculus online free by downloading volume 1 of OpenStax's college Calculus textbook and using our accompanying online resources.

Study U.S. History online free by downloading OpenStax's United States History textbook and using our accompanying online resources.

Study general chemistry online free by downloading OpenStax's Chemistry textbook and using our accompanying online resources.

Access free, peer-reviewed math textbooks and resources for students and instructors from OpenStax.

Explore free K-12 educational resources and textbooks provided by OpenStax to make learning accessible and affordable for students and educators.

Learn about human anatomy and physiology online by downloading OpenStax's free Anatomy and Physiology 2e book and using our accompanying study guide.

This Physics resource introduces physics and scientific processes followed by chapters focused on motion, mechanics, thermodynamics, waves, and light.