How to take networking notes

Hi Rene,
You have mentioned the following:

"What should you take notes of as a network engineer?

  1. Explanation of theory.
  2. Configuration and code snippets.
  3. Show and debug commands."

Can you please provide an example on how to take a note of “Configuration and code snippets” AND “Show and debug commands.”?

I am basically looking for a complete note so I can follow it as an example or template. Please help me out with this. I believe that this technique of taking notes will be very helpful for me since my journey with my goal might takes a few years.

It would be nice also to show how to create a lab in a way that if I want to perform this lab after like a year or so it would be straight forward.

Your help is this matter is extremely appreciate it. Thanks