[mighmi]

"Introduction to Operating System Abstractions using Plan 9 from Bell Labs" is the best operating system book I've seen - and it works through Plan9: https://archive.org/details/plan9designintro It isn't quite real world as Plan9 was never used for serious production, but it is mind opening and doesn't wallow in minutiae.

[anthk]

Get 9front and you would be surprised. Extra software for 9front:

http://shithub.us/

Also:

https://pspodcasting.net/dan/blog/2019/plan9_desktop.html

[1vuio0pswjnm7]

"Shithub is a community service, written by people who avoid browsers."