My favorite go to learning resources and cheat sheets. There is a sea of resrouces out there but perhaps someone that is looking for help will stumble on this one and it will as useful to them as it is for me.
https://git-school.github.io/visualizing-git/
http://terraform-best-practices.com
https://github.com/bregman-arie/devops-exercises