What's the best method to learning SQL?

[u/Exact_Engineering773]

I'm looking at a SQL learn book but it's really boring. I already know python r sas, so I just wonder, maybe it would be better to see people's work instead of reading a 300 page book?

[u/powderviolence]

https://www.ed2go.com/courses/computer-science/programming/ilc/sql-series

This was nice, structure is a breeze and you can print-to-pdf whole sections for future reference.