If you're paying by the hour/minute/whatever to surf the Internet, and you're wondering how cost-effective your time here will be, let me say a few words. The feedback I have received indicates to me that it will take most people anywhere from two to four hours to complete Intermediate HTML. That's including taking the quizzes.
As to whether it will be time well spent, I certainly hope so. My first tutorial has also been used as a resource for several college and secondary school classes, and as training material in many companies and branches of the government. So I hope that whatever made that tutorial worthwhile will make this one worthwhile too.
The tutorial is NOT currently available as a downloadable document. The reasons for this are given the Tutorial FAQ, so please read that before flaming me. This situation may change in the future, but even if it does, I couldn't say when.