I have found several good resources for IIS. I've recently been spending more time in the newsgroups. This is a real gem to learn about all kinds of different IIS and related issues.
- http://blogs.msdn.com/David.Wang (David Wang - IIS guru)
- http://blog.crowe.co.nz/ (Chris Crowe)
- http://www.gafvert.info/iis/ ( Kristofer Gafvert)
- http://www.adopenstatic.com/cs/blogs/ken/ (Ken Schaefer)
- http://iistoolshed.com/ (Tom Kaminski)
- http://msmvps.com/blogs/bernard/default.aspx (Bernard Cheah)
Of course ( IIS7 related materials )