Moodle.org is a great site which allows you to use their software to create online courses. This Modular Object Oriented Dynamic Learning Environment is super cool! I did the ICTCert course in Moodle and it was really easy to use. There are tons of video tutorials in the following links if you want to learn how to use it.
Moodle Video Tutorials
Russell Stannard's Training Videos
2-minute Moodles
Enjoy!
