human
I need to find a list of free online courses.
assistant
Here are some popular free online courses: 
1. Coursera - https://www.coursera.org/
2. Udemy - https://www.udemy.com/
3. edX - https://www.edx.org/
4. Khan Academy - https://www.khanacademy.org/
5. Open Learning Initiative - http://openlearninginitiative.org/