Ask HN: Where are the best online programing courses?

[Mefis]

Looking in particular for SQL and RStudio courses, but would be interesting to know where the best materials overall are these days, free or otherwise.

I was pretty underwhelmed by Coursera's Duke SQL course.

[samzer]

For SQL, CodeAcademy is good. https://www.codecademy.com/catalog/language/sql

For R, http://tryr.codeschool.com/

For RStudio, just download and explore. You'll learn the essentials of using it in no time.

[Mefis]

Thank you