Free Study Resources and Reading Plans: 150 Books and Courses That Cost Nothing

<p>Here is the working shelf. Sizes are approximate and change over time, so treat them as orders of magnitude rather than exact counts.</p> <table><thead><tr> <th>#</th><th>Source</th><th>What it actually holds</th><th>Size</th><th>Formats</th><th>Best for</th> </tr></thead><tbody> <tr><td>1</td><td>Project Gutenberg</td><td>Digitised public-domain works, mostly pre-1930 literature, plus later works released voluntarily</td><td>~75,000 ebooks</td><td>EPUB, Kindle, plain text, HTML</td><td>Reading literature; offline; plain-text analysis</td></tr> <tr><td>2</td><td>Internet Archive / Open Library</td><td>A lending library plus web archive: books (borrowable), films, audio, software, entire websites</td><td>~250 million items</td><td>PDF, EPUB, borrow-streamed, MP3, video</td><td>Borrowable books; archival research; images and film</td></tr> <tr><td>3</td><td>OpenStax</td><td>Peer-reviewed open textbooks, written by leading academics and peer-reviewed by their peers</td><td>~1,000+ titles (books + lecture notes)</td><td>PDF, online, Kindle, print-on-demand</td><td>First-year university and high-school courses</td></tr> <tr><td>4</td><td>Open Textbook Library</td><td>A catalogue of open textbooks from many publishers, with reviews and adoption info</td><td>~4,000+ titles</td><td>Mostly PDF and online</td><td>Comparing textbook options before you commit</td></tr> <tr><td>5</td><td>BCcampus Open Textbook Collection</td><td>Peer-reviewed open textbooks in BC and beyond, in subject groups, with attribution files</td><td>~500+ titles</td><td>PDF, DOCX, ebook</td><td>Humanities and social-science-heavy courses</td></tr> <tr><td>6</td><td>MIT OpenCourseWare</td><td>Full course materials: lecture notes, problem sets, exams, readings lists, in many cases videos</td><td>~2,000+ courses</td><td>PDF, HTML, video</td><td>Studying a course you are not enrolled in</td></tr> <tr><td>7</td><td>OpenLearn (The Open University)</td><td>Free course materials built for distance learners, with forums and activity prompts</td><td>~300+ courses</td><td>PDF, HTML, video, quizzes</td><td>Learning without a deadline or a fee</td></tr> <tr><td>8</td><td>OER Commons</td><td>A discovery layer over many repositories; not a library itself but a good map of one</td><td>Aggregates thousands of resources</td><td>Mixed</td><td>Finding resources in subjects with thin open coverage</td></tr> <tr><td>9</td><td>DOAJ</td><td>Peer-reviewed open-access journals and their metadata</td><td>~19,000+ journals</td><td>Articles, PDFs</td><td>Finding free journals to submit to or read</td></tr> <tr><td>10</td><td>PubMed Central</td><td>Biomedical and life-science articles that are free to read, plus preprints</td><td>~9 million+ articles</td><td>HTML, PDF</td><td>Life sciences, medicine, public health</td></tr> <tr><td>11</td><td>arXiv</td><td>Preprints across physics, maths, CS, stats, economics and more</td><td>~2.4 million+ papers</td><td>PDF</td><td>Newest research; finding a supervisor's reading list</td></tr> <tr><td>12</td><td>LibriVox</td><td>Human-read public-domain audiobooks, produced by volunteer readers</td><td>~10,000+ titles</td><td>MP3, ZIP</td><td>Long commutes; learning a language; rest</td></tr> </tbody></table> <h3>1. Project Gutenberg — the plain-text shelf</h3> <p>Gutenberg is the oldest item on this list and still the most useful for one reason: it distributes <strong>plain text</strong>. No styling, no images, no DRM, no JavaScript. Every ebook can be downloaded as a single <code>.txt</code> file, which means it can be read by any program ever written, grepped in full, fed into a script, or opened on a device that cannot render HTML.</p> <p>The catalogue is dominated by English literature and history, with substantial holdings in theology, philosophy, mathematics and children's writing. It also holds the occasional technical manual, because nineteenth-century engineers published them and they are now out of copyright.</p> <p>Practical notes. Most titles have an EPUB, a Kindle-compatible file and plain text. Download counts are visible and are a decent proxy for usefulness. The donation request on each page is genuine and the project does need it, but nothing stops you.</p> <blockquote><p>A catalogue record tells you a book exists. A plain-text file tells you what it says.</p></blockquote> <h3>2. Internet Archive and Open Library — the borrowing shelf</h3> <p>The Internet Archive is the largest of these collections by item count and the least uniform in what it holds, and it runs several distinct services under one roof. Confusing them is a common source of disappointment.</p> <ul> <li><strong>Open Library</strong> is the catalogue and lending layer. Hundreds of thousands of titles have scanned pages and can be "borrowed" — one-hour or two-week loans with digital lending rights, subject to account limits.</li> <li><strong>The Wayback Machine</strong> stores snapshots of websites going back to the late 1990s, which matters when a study needs the version of a site that existed in 2011.</li> <li><strong>Special collections</strong> hold recorded oral histories, early computing magazines, government documents, software and video, and are frequently the only surviving copy of something.</li> </ul> <p>What it holds is enormous and unevenly catalogued. Search quality is better for books than for ephemera, and the "borrowable" state is set per item by the rights holder, sometimes generously and sometimes not at all.</p> <h3>3. OpenStax — the first-year-course shelf</h3> <p>OpenStax publishes peer-reviewed textbooks: the books go through the editorial process of a commercial publisher, with external reviewers, and the publisher then pays for the editing, the artwork and the hosting, and gives the book away.</p> <p>The strength is coverage of high-enrolment subjects with high textbook prices — marine biology, economics, sociology, psychology, chemistry, physics, statistics, business, nursing and precalculus are all here. The style is a hybrid of textbook and course pack: short sections, worked examples, check-your-understanding boxes, and end-of-chapter exercises with solutions.</p> <p>Formats are unusually good. Every title is free as a PDF, readable in the browser, and available in Kindle and print-on-demand formats, so you can buy a physical copy for the price of printing. Errata are published openly, which is how open textbooks stay honest.</p> <h3>4. Open Textbook Library — the comparison shelf</h3> <p>This is a catalogue, not a publisher. It indexes open textbooks from OpenStax, BCcampus, LibreTexts, and dozens of smaller presses and individual authors, and it adds something the others do not: <strong>reviews and adoption information</strong> from faculty who have actually taught the book.</p> <p>That matters when you are choosing between two candidates for a syllabus. The reviews typically mention what is thin, what is dated, and what worked in class. Read the negative ones; they carry the information.</p> <h3>5. BCcampus Open Textbook Collection — the humanities and social-science shelf</h3> <p>Run in British Columbia, this collection is organised by subject and places unusual weight on the humanities, social sciences and business. It also publishes an <strong>attribution file</strong> for each book, which sounds bureaucratic and is genuinely useful if you are compiling a bibliography and want the right credit line without hunting through the copyright page.</p> <h3>6. MIT OpenCourseWare — the syllabus shelf</h3> <p>MIT OCW holds complete course packages from a large fraction of MIT's catalogue, and increasingly from other universities too. A package usually includes lecture notes in PDF, assignments, exams with solutions, and sometimes video.</p> <p>Coverage is strongest in engineering, mathematics, computer science, physics and economics. The signature of an OCW course is the assignment: a problem set that resembles a real course's, with a model solution attached. That is what makes OCW valuable as a self-study spine.</p> <h3>7. OpenLearn — the distance-learning shelf</h3> <p>OpenLearn is The Open University's free course platform. Its materials are written for independent learners with no tutor and no deadline, which is a different design brief from a university lecture course: explanatory notes, self-assessment questions and feedback-driven activities. Formats are a mix of PDFs, web pages and video.</p> <h3>8. OER Commons — the map</h3> <p>OER Commons is a discovery service with an embedded editor for sharing. It aggregates from many repositories, so you will find duplicates and the occasional dead landing page. Use it for coverage in subjects where open materials are genuinely thin — nursing, vocational trades, early-years education — and always follow a resource through to its host repository before relying on it.</p> <h3>9. DOAJ — the journal shelf</h3> <p>DOAJ is a directory of open-access journals, all peer-reviewed, with screening that checks licensing and editorial standards. It is where you go when you want to publish, or when a citation points at a journal you cannot otherwise access. Many listed journals charge no author fee; some do, and DOAJ flags that.</p> <h3>10. PubMed Central — the life-science shelf</h3> <p>The public-access half of PubMed. Life-science authors deposit accepted manuscripts here, so you can often read the accepted version of a paper years after it appeared in a paywalled journal. Coverage is strongest in medicine, molecular biology, epidemiology and public health, and it includes preprints.</p> <h3>11. arXiv — the preprint shelf</h3> <p>arXiv holds manuscripts before peer review, and the fields are unevenly distributed: dense in physics, mathematics, computer science and statistics, thin in the humanities, growing fast in economics. Its main use for most learners is <strong>finding a researcher's reading list</strong>: search the author and look for the field's canonical open reference on their page.</p> <h3>12. LibriVox — the listening shelf</h3> <p>Volunteer-read audiobooks of public-domain texts. The catalogue is mostly classic literature but includes public-domain science, philosophy and the occasional textbook-era work. Everything is plain MP3, free, with no account required.</p>