Here's a little list of useful learning material about Docker we put together for myself and hope it's worth even for you.
Getting started with Docker (course) https://cloudacademy.com/cloud-computing/courses/getting-started-with-docker
Docker: advanced concepts (course) https://cloudacademy.com/cloud-computing/courses/docker-advanced-concepts/
Official Docker Guidebookhttps://github.com/kencochrane/docker-guidebook
Continuous integration with Docker Deployments: the players http://cloudacademy.com/blog/continuous-integration/
Continuous Integration with Docker deployments – Part 2 http://cloudacademy.com/blog/continuous-integration-docker/
How to bind together tools like Jenkins, GitHub and S3 – along with Docker? http://cloudacademy.com/blog/continuous-integration-docker/
Orchestrating Docker (Ebook) https://www.geekbooks.me/book/view/orchestrating-docker
Docker security: making sure you get it right http://cloudacademy.com/blog/docker-security-get-right/
Docker Tutorial 1 - Installing Docker https://www.youtube.com/watch?v=bV5vbNK3Uhw&list=PLkA60AVN3hh_6cAz8TUGtkYbJSL2bdZ4h
Feel free to add what you think it's worth a look w/ a comment below:
Enjoy yourself. :)