I completed one course called "The Student Hat" (it is designed to raise your literacy level, comprehension, and ability to apply or do things that you have read or studied). From this I gained the ability to see the sketches on blueprints in 3D in my mind (I'm a building contractor). I can now read any blueprints and understand them without question and with total certainty that I can build it smoothly. It has increased my speed of completing construction projects 3 fold.