The following is a list of resources that I use frequently, and people whose opinion I trust:
The basis for all development knowledge on the web
The virtual home of Scott Hanselman
For all things TFS API
An online group that I run, allowing participants to compete with each other in solving a pointless problem
If you have a blog or site, and would like to be included in this list then please feel free to contact me. I will only add sites that I believe to be valid and useful.