How to use this site

A study loop that works for admin topics.

Each course is a stack of short lessons. Read a lesson, run the commands on your own machine, then change one input so you know you did not just copy a block. If a command fails, write down the exact error — that string is the curriculum.

Start with the Python or Linux course unless you already live in a shell. Virtualization courses assume you can install software. Networking courses assume you can read an IP address. Jumping straight to ESXi is allowed; it is just a harder first hour.