TeachMac

TeachMac, The Modular MacLearning and Teaching System. With our growing, searchable library of multimedia modules, TeachMac provides great Mac learning tools for novices and experts alike.

Modules vary from detailed tutorials about specific applications to geek treats: mini lessons for the nascent geek in all of us. Easily build custom modules to meet your needs as a learner or a teacher. So when someone needs your help, you can e-mail a video tutorial with a few quick clicks.
Modules range in price from free to $15.00, and annual subscriptions are only $49.Also available, a beta version of Module Maker, an application for authoring modules that is now available to anyone who submits a module proposal. (If a module is accepted by Created Equal, the creator receives 50% royalties.)