Win10 Power User Resources?

It has finally happened and after more than a decade of diving ever deeper into the Linux ecosystem, I am somewhat forced by work to stick with Win 10.

Now, configuring Win10 isn't always a breeze. I have moved some of my tasks to WSL and I found some useful Registry tweaks (e.g. changing the window titlebar height). Lucky for me, I have local admin rights.

But now I am looking for a more in-depth guide to tweaking the best out of my system. It's a pity that Windows Tools are so often closed source and it becomes hard to see wht they actually change in the system (aside from trust issues).

Can you recommend books, websites, anything useful for getting deeper into the relevant workings of Windows for a user that likes to take the most out of their Win10 setup?

Or are full Admin Guides the better way to go?

An equivalent of the Archlinux Wiki would be heaven, hah! But well...