There are over 1,000 subscribers to the MOOC so far. The MOOC will take 3 weeks of your time. Each week is defined by one lesson, which is in 10 parts, each part lasting no longer than about 10 minutes. Each lesson ends with a quiz. Successful completion of all quizzes results in a certificate of completion.
Want to get a quick feel for how the MOOC will be? Part 1 (of 10 parts, which will be released next week) of the first lesson is already available: