You can start with prerequisites here.
The up to date tutorials (recommend in the form exercises first) is available here.
While I fully understand that everyone loves videos to follow, I strongly advise against them for
creation of stakepool - (not because of quality and content) but only because the steps taken in Videos will be point-in-time, while there are changes everyday being added/corrected - which makes following videos a bit of a blurb at the current (early) stage.
After you’ve gone through the tutorials to understand how things work, check out cntools script which will automate most of your pool registration and wallet/keys management.