• Academic Lesson, YouTube channel offering free courses on various science subjects (https://www.youtube.com/c/AcademicLesson)
• Cogito, educational YouTube channel (https://www.youtube.com/c/CogitoEdu/featured)
• Coursera, platform which offers free courses from world renowned universities (https://www.coursera.org)
• Crash Course, educational YouTube videos on all sorts of topics (https://www.youtube.com/c/crashcourse)
• Domain of Science, YouTube videos about science (https://www.youtube.com/c/DomainofScience/featured)
• EDx, platform which offers free courses from world renowned universities (https://www.edx.org/)
• Extra Credits, educational YouTube channel on mainly history (https://www.youtube.com/extracredits/featured)
• Khan Academy, free educational platform with classes on math, science and other topics (https://www.khanacademy.org/)
• MIT OpenCourseWare, a free and open collection of materials from MIT (https://ocw.mit.edu)
• The Open University, free learning platform (https://www.open.edu/openlearn/)
• Professor Dave Explains, Youtuber focussing on science subjects (https://www.youtube.com/c/ProfessorDaveExplains/featured)
• Project Gutenberg, platform which mainly stocks ebooks with expired copyrights which you can download for free (https://www.gutenberg.org)
• Quizlet, flashcards on all sorts of topics (https://quizlet.com/en-gb)
• Ted-Ed, educational videos on a range of topics (https://www.youtube.com/teded)
• Wikipedia, millions of articles on almost any topic you can think of (https://en.wikipedia.org/wiki/Main_Page)
• Wikiversity, free educational resources (https://en.wikiversity.org/wiki/Wikiversity:Main_Page)