edX
edX is a non-profit organization founded by two leading U.S. universities: Harvard and MIT. You can find on their platform many free courses on a wide range of topics.
They offer video lectures that can be found on YouTube and are also available to download for offline learning. Although it might be a bit difficult to navigate on their platform, it’s just a matter of time until you adjust. The most popular subjects you can find on this platform are:
- Computer Science
- Engineering
- Humanities
- Statistics
- Data analysis
Also, the edX courses offer you the possibility of earning a verified certificate, but only if you sign up for their subscription program.