The best Data Science courses on the internet, mostly free

The list is compiled by David Venturi.
David has looked into the reviews and stars and the methods of course delivery and came up with the list.

https://medium.freecodecamp.com/the-best-data-science-courses-on-the-internet-ranked-by-your-reviews-6dc5b910ea40
Here is his own blog:
http://davidventuri.com/blog/my-data-science-masters