Books by John Walkenback are always highly commended in the newsgroups.

But, you can pick up loads of advanced topics by visits these groups on a
regular basis.

Hope this helps.

Pete

"NJ" wrote in message
...
Hi,

I consider myself to be very proficient in excel - and am looking to
educate myself on "very advanced" excel topics / features.

Does anyone have a good resource that can help me with this? A book,
a group?

Thanks