Here is a list of some of my most favourite sites, blogs or technical artciles for your browsing.
Black Wasp – Lots of useful development articles
C# Help – Another handy site with lots of regularly updated articles
C# Online – A great wiki based site with lots and lots of useful things for the .NET developer
Scott Gu’s Blog – This guy heads the .NET development team at Microsoft and knows everything there is to know, his blogs posts are always worth a read.
Sam Mullins – Development articles from my friend Sam