Last week, we launched Everyday Data Science on Hacker News: https://news.ycombinator.com/item?id=32118530.
This is the first featured course on TigYog. I have worked with Andrew Carr on this course for about three months so far.
I think this can really grow! We'll be completing the course over the next year, and I'll be continuing to grow the platform and writers. (Let me know if you're interested!)