jd, The eCourses are quite straight forward, once launching they run as a flash-style tutorial to which you can skip backwards and forwards between different lessons, at the end of each topic there are simple questions to complete to move on, then towards the end there is an actual 'pop quiz' to which you need a 70% pass rate to continue.
All the material is online, though I made my own notes while watching it. You dont need to watch an entire lesson as you can skip between sections, and review certian parts you are unsure on. You can also re-launch the eCourse as many times as you want - and complete the pop quiz as many times as you like while the eCourse is valid (I think its 2 months from payment)
If you have any other questions let me know, Hope this helps!