After around 4 months of reading manuals, forums, watching tutorials and asking online, I've eventually managed to have an almost properly working NixOS installation on my pc and wiped the Win10 partition (I have win10 in a VM as a fallback mechanism)!
I started this journey initially wanting to switch to linux and I started my tests with Debian Stable. But the repo was really old (as expected), so I tried the Testing variant. But this repo had missing packages. I tried Unstable for a few moments too, but I crashed and didn't want to bother. I figured that I could make a script to (declaratively?) fetch and auto update packages from github, bypassing Debian Testing.
Then it was when I looked at NixOS and found out that the whole system kinda does what my script would do, but much much much better. Almost ever since then I tried to learn almost everything I needed and a few extra stuff to get it working. This is the configuration I've come up with so far (it's probably considered simple).
I also made a guide to keep track of what I was doing and what I would have to do once I took the decision to transition to Linux/NixOS, hopefully it might help others too:
https://codeberg.org/BlastboomStrice/LinuxPlan/src/branch/main/LinuxPlan.md
Finally I can be called a Linux user :)
Dang, you really like printers!
I had a similar journey to yours over a years ago, but you seem much better prepared than I was.
Welcome to the club
Hahaha, the funny thing is that I didnt manage to get my hp laserjet 1020 to work, but I was too bothered to get even deeper into the issue (I have alternative ways to print).๐