WindowsNetworking.com covers a lot more than networking, and is a great general resource for articles on Windows, Windows networking and networking in general. In short, there’s a lot of information here. Links to discussion groups take you to http://www.security-forums.com, a very active community dealing with a lot more than just security issues.
Become a Patron of Ask Leo! and go ad-free!
These sites aren’t really for the newbies, but if you’ve already gotten your toes wet and want to spend a little time browsing for some intermediate to advanced information, WindowsNetworking.com is worth some of your time.