Nuvvo is a Web 2.0 application which helps create online courses.
The service may be useful as a central hub for your students. The websites address is example.learnhub.com. "Example" is the name chosen by you.
See the Nuvvo video tour showing how you can use the application.
You can offer the online course for free, or charge for it, in which case Nuvvo collects 8% of the earnings.
Teach and learn with Nuvvo. Lifehacker.com.
Image source: Nuvvo.com