Ask HN: Looking for reading materials for Linux desktop as daily driver

I'm making the switch from Mac OS to Linux as my daily driver. I'm planning on running Debian with kde. Using one of the vanilla builds provided by Debian without too much customization.

I'm hoping to find someone who has also made the switch and can share resources they've found helpful.

I've been a java back end dev for about 10 years now with experience deploying and running services on Linux. I know my way around the command line, not entirely uncomfortable with building things from source, and put myself at an intermediate level knowledge of Linux.

I'd like to learn more about general OS internals, filesystem layout, the various OS services, etc. from the POV of the system operator/user.

Also looking for any suggestions for reading/blogs/youtube for more becoming a more advanced CLI user.

Thank you