RE: why should down mean up?
Just a point of order.
For a beginner, I think it's best not to confuse pulling the elevator stick with "up". Yes the nose pitches up when you do that, but if you pitch the nose up the plane will only go up with airspeed. As a student, you should be learning that elevator controls pitch, not altitude.
You will go farther much faster in the learning process if you keep to convention, listen to experienced people and shun the advice of people who simply can't fly.....even if they have been doing it badly for 30 years.
Good Luck!!