What a container really is, from the inside (full course in one video)

Bash course for system administrators: the language, not the commands

Basic Python course for system administrators

Python for automating deployments (a course for sysadmins)

Python for being on call: reading logs at three in the morning

Networking for DevOps people: 7 traps that throw no error, in containers (full course)

Backups that actually restore: 9 drills destroying the original (full course)

Supply chain: Trivy, signatures with cosign and your own registry (full course)

Secrets with OpenBao: no passwords in the code, and the traps that throw no error

Your own GitHub and your own CI: Forgejo and Woodpecker, without leaving the door open

The AWS bill: FinOps for people who pay out of their own pocket (full course)

An incident from start to finish: 5 incidents caused, diagnosed and written up in a postmortem

Zero to production: a whole project, stitching together what you already know (full course)