MS webcast links and notes:
There are a couple Excel webcasts at the Office Webcasts site, this page is lacking an RSS feed.
You may also want to check the webcast archives for others, however there isn’t any obvious way to search the webcast archives(the search on the page is for the entire site, a search for “excel webcasts” turns up a mixed bag).
“Discover how to get the most out of Microsoft Office System to save time and be more productive. Tune in to these live and on-demand webcasts to learn time-saving tips for optimizing your use and your team
