To be honest, installing linux the firat time was a real disaster back in 2006. I had to learn how to use the virtual terminal, run some terminal commands, and handwrite an xorg config file just to get a gui.
Since then installing linux has gotten pretty easy. I'm comfortable repartitioning, backing up data, etc., and a lot of those skills were developes by working through guides and learning as I went.
I'm non knowlegeable or comfortable about
- Sourcing and activating windows LTSC (will try massgrave)
- EFI boot sector (will disconnect all other drives while installing windows)
I also don't know what I don't know. But installing windows as a dual boot option has got to be common enough that a guide exists, right?