Books · Audiobooks · Courses

Find your next book.

Read and listen together

Follow the story.

Human narration, with matched sentences highlighted as you read.

Browse Read along →

Free books to read.

10,833 listings of free books to read online: 234 for books cited by MIT OpenCourseWare courses and 10,599 from RedLectern’s own list of free books. 5,295 open in the reader here, on 5,248 different reader pages; the rest link to a free copy at its source. 17 books in the reader have human-narrated LibriVox audio.

Browse books → Audiobooks → Browse by author →

Learn one topic.

One idea at a time from MIT's OCW Scholar courses: MIT's lecture clips, notes and practice problems for that topic, in MIT's order, with MIT's solutions where MIT publishes them.

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Make time to learn.

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About the library

Free university courses and books. At your pace.

RedLectern is a free, independent study library. It lays out MIT OpenCourseWare courses one page per course, with the lectures, problem sets, solutions and exams MIT published for it, and hosts public-domain books in an on-site reader, 17 of them with free human-narrated LibriVox audio; in 14, the text highlights as it's read. No paywall, no display ads, no AI-written summaries. Some book listings include paid links to bookstores. Not affiliated with MIT.

Courses from MIT OpenCourseWare, The Open University (OpenLearn) and TU Delft OpenCourseWare. RedLectern is independent of MIT, The Open University and TU Delft and is not endorsed by them. How RedLectern is built.

Start here

6 subjects to begin.

A starting course and a free book for each, with MIT’s own words on them where MIT’s pages give them, on the Start page.

See all start-here picks → All courses →
Biology

Fundamentals of Biology

Browse materials

Biology 2e Free · open license
OpenStax (Mary Ann Clark, Matthew Douglas, Jung Choi et al.)
Free companion book, not a text this course assigns

Make room for the work.

Three steps, at your own pace.

  1. Choose a course.

    Search a subject or begin with a recommendation. Check the prerequisites and see which materials are available.

  2. Follow its structure.

    Follow the course order where a course has one (how it is set). Otherwise, work within the provider's own sections.

  3. Keep your place.

    Mark activities done when you are ready. Progress is saved in this browser, and synced to your account if you sign in; export a copy to keep or move it.

Know what opens.

Know what opens.

Each label tells you how you can study that course.

  • 3 courses Course order

    Lectures, problem sets and exams in one order for the whole course, set from the course's own materials (how).

  • 1962 courses Browse materials

    The provider's own sections, in the provider's order. Start and continue within a section.

  • 631 courses On OCW only

    Open directly on MIT OpenCourseWare. There is no course page here.

2,596 courses in the catalog, 1,965 with a course page here · updated 2026-10-22