American Express Open Forum is a great site for business education. The site has a wealth of articles and videos available for free. They cover everything from marketing to management to finance. Good stuff.
Recently the site created a bunch of short online classes called Crash Courses on a range of topics including YouTube Marketing, Perfecting Your Elevator Pitch, and The Art of Hiring. There are several other courses as well. They’re taught by good people, they’re short, and they’re interesting. American Express is using a platform from Veri.com that you might find useful as an option for building courses for your prospective clients.