With Linux / BSDs / etc. there are dozens of resources including websites, IRC channels, Discord servers, subreddits, books, etc.
With Windows, however there seems to be the docs on MSDN (pretty complete, but better as a reference than anything) or the MSDN forums which have a terrible UI and vague copy / paste answers along with a handful of outdated internet articles.
I understand that with Windows being proprietary, there is going to be less in depth knowledge, subject experts, and resources, but it's still shocking to me that there aren't even any good WDK books.
https://www.microsoftpressstore.com/articles/article.aspx?p=...