What is one awesome online course that every HN reader should take?

[justanotheratom]

I have some off days coming up. Looking for something fun ;)

[meritt]

Machine Learning by Andrew Ng (Stanford)

https://www.coursera.org/learn/machine-learning

[roshan_arhsim]

Learning how to learn

https://www.coursera.org/learn/learning-how-to-learn