* For the CKAD, here are my notes: https://gist.github.com/veggiemonk/70d95df77029b3ebe58637d89ef83b6b
* an article with some helpful links: https://medium.com/devopslinks/my-story-towards-cka-ckad-and-some-tips-daf495e711a9
* this list is awesome!! https://docs.google.com/spreadsheets/d/10NltoF_6y3mBwUzQ4bcQLQfCE1BWSgUDcJXy-Qp2JEU/htmlview
* systemd https://www.digitalocean.com/community/tutorials/how-to-use-systemctl-to-manage-systemd-services-and-units
* tmux should be useful as well (https://gist.github.com/MohamedAlaa/2961058).
* practice this in order to understand k8s: https://github.com/kelseyhightower/kubernetes-the-hard-way
* this can help as well: https://github.com/jamiehannaford/what-happens-when-k8s