I’ve spent money on courses that promised everything, but ironically, only free websites truly delivered. These four websites have taught me more, faster, and more effectively than any paid course I’ve ever taken.

OpenLearn, from The Open University, is one of the most underrated free learning platforms I’ve used. It offers a wide range of university-level courses in subjects like psychology, health, education, business, and science. Courses on OpenLearn include a mixture of learning materials, ranging from articles and videos to interactive content.

It offers courses not just for degree-level topics but also for fundamentals like basic mathematics, chemistry, and electronics. Course content is well-organized and divided into bite-sized lessons, making it easy to study. The site includes activities within the courses that test your knowledge as you go, and there’s a practice question after each section, ensuring you’re not just breezing through it.

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The best part about OpenLearn is that you can download a course in different formats, including PDF, ePub, Kindle, and Word. That means I don’t need an internet connection to study. Instead, I can download and go through the material at my own pace.

OpenLearn was beneficial when I wanted to explore topics outside my usual technology interest. For example, I took a course on retirement planning that offered practical, immediately applicable takeaways, and another on renewable energy. OpenLearn also highlights different courses based on themes, which has been vital for me in discovering valuable ones on the site.

Khan Academy is one of the most approachable and effective free learning platforms I’ve ever used. It stands out for how it simplifies complex topics into small, easily digestible lessons. Khan Academy has been my go-to website when I need to brush up on fundamental concepts like high school algebra or dive into calculus.

Additionally, as someone with diverse interests, it has held my hand whenever I wanted to dive into a new topic, helping me get the fundamentals right before diving into advanced topics on sites like MIT OpenCourseWare (covered below). The short video lessons, paired with interactive exercises and instant feedback, made it feel like I had a patient tutor walking me through every step.

The site includes courses in various subjects, some organized by level, which makes it a perfect place to study the basics of certain topics.

The only issue is that if you’re a fast learner, you may find the pacing too slow. However, whenever I have a problem understanding a certain topic, Khan Academy has been the perfect site. The explanations are as simple as possible and delivered without rushing or unnecessary jargon.

freeCodeCamp is the perfect website if you want to study how to code for free—it’s one of the best coding bootcamps. I studied Information Technology at university, and freeCodeCamp truly transformed how I learned to code. In fact, thanks to this site, I learned how to use the Git version control system and push my very first project to GitHub.

Unlike many paid platforms that promise job-ready skills but deliver shallow tutorials, freeCodeCamp dives deep and keeps everything free. What impressed me most was the structure and its hands-on focus from the start. It ensures you’re not just watching videos by integrating challenges into every step, keeping you engaged and reinforcing your understanding.

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The curriculum is thorough, and it played a huge role in helping me sharpen my frontend and backend skills. The community is a huge plus, especially for a free resource. Whenever I got stuck on something, fellow learners in the community always came through. I’ve bought some paid courses, and I’ve never found such an active, supportive community as I did on freeCodeCamp.

freeCodeCamp primarily focuses on teaching programming skills, so I understand it may not be everyone’s cup of tea. However, if you’re interested in learning programming, look no further. As a bonus, it also has an active YouTube channel with tons of computer science-related courses.

One of the most valuable free learning resources I’ve ever come across is MIT OpenCourseWare. It offers an entire library of MIT course materials, all completely free and openly accessible. Each course includes everything you need to complete it successfully, without knowledge gaps.

Each course includes a syllabus, lecture notes, reading lists, and activities like assignments or exams to test your understanding and help the material stick. Many courses also include video lectures and free online textbooks.

Although my primary interest is in computer science and mathematics, MIT offers courses on nearly every subject. You’ll find courses in business, physics, economics, humanities, social sciences, history, media, architecture, public policy, energy, and artificial intelligence (AI), to say the least.

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For every course I’ve taken, I was impressed by the sheer depth and quality of the content, which makes MIT OpenCourseWare stand out. You learn at your own pace, and everything is available up front, which is perfect if you’re only interested in a certain section of a course syllabus.

Just because a learning resource is paid doesn’t mean it’s better. These free sites have helped me learn at my own pace, explore new interests, and build fundamental skills without spending a dime. If you’re willing to stay consistent and curious, you’ll find that some of the best education out there doesn’t cost anything at all.