Class-Central.com
Class-Central is another free educational website that offers both free classes and the opportunity to create free courses for others. This site has a great progression system, with several specialized certificate and credential programs offered.
There are a couple types of courses offered at class-central. One type is the scheduled class, which follows the structure of typical online classes. The other type is the self-paced course. These are the courses that tend to be free and they are a great way to pick up a new skill in your spare time.