The first rule "do not learn what you do not understand" is nonesense in the context of learning mathematics/physics/hard sciences. If you understand a subject, then it means that you have learned it effectively. In my experience with teaching at university, I have found that the wish of students to understand before learning is actually a great barrier to comprehend a subject. In order to build intuition on a subjec…
http://www.physics.emory.edu/faculty/weeks//journal/elby-ajp...