Learn Windows 8 with this video tutorial software (runs on windows XP/Vista/7/8). The demo has one lesson with interactive exercises (practical exercises). The full version (which you can buy buy clicking on the shopping cart on the software) has 4 video tutorials, each followed by interactive exercises. It also has a multiple choice questionnaire, a game and social network functions.
The software is interactive, in other words it asks you to do something and if you get it wrong it will tell you to try again. It also has multiple choice and social network functions (it allows you to check your facebook and twitter).