This was a featured article in the AARP (American Association for Retired Persons) magazine that came today. (BTW, it's a great organization to join because of info and discounts...in the last couple of years we've saved hundreds on car rentals and hotel rooms. It's for everyone over 50 and for Canadians it costs $17US a year.)
I had no idea there was so much free e-learning out there. MIT offers over 2,000 free courses online and Apple has loads of stuff at their iTunesU from universities like Oxford, London School of Economics, etc. I did a search for "Interaction Design" because Richard is doing some work in that area and brought up lots of hits.
Here's a link to the article:
The New U.: How to Learn Just About Anything Online for Free - AARP Bulletin Today