Learn Docker

10 things to avoid in docker containers
http://developers.redhat.com/blog/2016/02/24/10-things-to-avoid-in-docker-containers

Learn Git

Are you having trouble using Git? Don't worry, you are on the same side with Hitler:
Hitler uses git

Knowledge is Power: Getting out of trouble by understanding Git by Steve Smith
https://www.youtube.com/watch?v=sevc6668cQ0

You can view presentation slides here.