Well damn, my lecturers never bothered about that. (Not quite true. I had some great ones who took care to hold your attention, or who just naturally managed to make things interesting. But I also had some who didn't really care how much of what they told you stuck, because it was Basically Your Problem.) But you're probably right that if you had to sit down and figure this out, so that might indeed be it.

A map and guide would be appreciated, sure! :)