Steve Bedder is someone you might label as a certified Autodesk nut. Of course he's not really nuts, Steve just happens to know more about Autodesk than most of us. So when he puts together a list of websites that in one way or another deal with everything in the Autodesk world and writes that "they are very useful and informative" you better believe him.
Check it out - Steve Bedder's list of Autodesk resources. I'm sure he'll keep improving and growing the list as any good gardener would.
Steve just moved his Autodesk Manufacturing Northern Europe website over to a new address, do check it out, it's well worth your attention. (He even wrote about GrabCAD, hurray!) And you can also follow Steve on Twitter @AutodeskMFG.