Chris Fidao, the hero behind serversforhackers.com, and Deploy PHP!, created a new video course called Shipping Docker. It's in early access right now and it covers everything from the basics to advanced topics like building a multi-server production environment.
I'm only a couple of videos deep in the course, and like expected, I'm liking a lot of what I'm seeing.
This is a comprehensive course in the many uses of Docker. From playing to developing, testing to deploying, we'll cover it all in a way that is easy to understand.
(In case you were wondering, I'm not being paid for posting this)