If you would like to save your progress as you go through one of the courses in this system, then you must first register. If you have already registered with one of the other services at Carrubbers Online, then your details are already here, so you may use all the features straight away.
If you click on the "Save Progress" link that is beside each of the verses you will see through the courses, then the script will record the verse, and the "Resume Course" link will then have a meaningful action.