Nice one..
Here is some great
SEO Guides from SEO Chat, not too sure who runs that site but ranking #2 on Google for SEO must mean something.
SEOchat is part of DevShed which is a massive network based in the US. They probably have a couple of million in bound links to there network.
Forums over there are supposedly quite commercial (you have to pay to post webmaster items for sale).
Not necesarily the best rated webmaster forums though.
Personally I would say have a look over at digitalpoint forums. Some really knowledgeable members and posts covering just about every aspect of internet marketing.
I will post a list of SEO related links over on my blog soemtime early next week.
Aaron Wall over at SEOBook.com really knows his stuff all right and you can get some decent SEO tools. He has a nice toolbar for FF also.