http://www.codeproject.com/index.asp?cat=1 and The Scripts: http://www.thescripts.com/forum/forum112.html
Although I think The Scripts has the worst (and I mean that literally) forum navigation. I can barely find out how to post on there. And once I post I can never find my post so after I post I bookmark the page so I can just go back. Their auto emailer has never worked for me. But I get the most help there for questions.
At The Code Project, it is more of learning from examples. Their forum has not really ever been much help for me. I have asked 1 question and never gotten an answer. But their examples are the best by far.