If you’re completely new to the concept of “open” courses, then this primer is worth a good look. The new edition of the AARP Bulletin (which targets millions of Americans over the age of 50) tells you where to find open courses, what software you might need, how to store files, etc. We get a little mention here, and if you’re visiting from AARP, I would encourage you to delve into our large collection of free courses from top universities. (It currently features over 250 courses.) Our collections of free audio books, free language lessons, free e-books, free online movies, educational video sites, and smart YouTube channels will also be of interest. Some of these collections also appear on our free iPhone app.