There are no instructors and you are pretty much left alone to get on with the course and learn in your own time, which is great for learning as you are forced to seek at your own answers. You receive some useful text books, however, there is plenty of room for improvement on the bulletins for each subject.
I also found the marking of the assignments to be a little inconsistent in my humble opinion. Overall, good course that I am glad I did and when completed gives you full membership to The Security Institute.