YouTube has thousands of creators that post content to the website everyday, often teaching followers and subscribers skills like crochet, yoga, or even languages.
Memrise is a free app and website that teaches users how to speak several languages. It demonstrates how to converse fluently and naturally using native speakers and real-life events.
Alison offers free business, health, technology, and language courses. The website certifies your talents so you may exhibit them to an employer.
Coursera partners with universities and colleges worldwide to offer free courses and content. Many in-depth courses are available.
The website provides free tutoring on a variety of subjects, including Biology, English, and Math, and includes easy-to-understand videos and practise exercises.
Ted Ed is Ted Talks' educational branch that provides videos on everything. Ted Ed videos cover history, science, and even biology.
Codecademy allows students to follow lessons and practise live. It offers a dashboard to track your progress and organised lessons.
If you have a skill to share, like a language or music, you can pair with someone looking for that skill and have them teach you in an exchange.
Duolingo is for aspiring linguists. The free, enjoyable software teaches all its languages. The app includes Klingon and High Valyrian for English speakers.
Google's Digital Garage provides free digital skills. You can learn skills like data handling, digital marketing, and website building.
iPhone users can access iTunesU. There's some premium stuff, but there are also free podcasts and videos.
Stanford University provides high-quality courses that you can take at your own time and pace. Check the "free" filter on the side to find the free courses.