"I love to tutor & have a Master's in Physics and Philosophy"
...Another 10% is the periodic table (memorization), and the other 10% bonding (valence electons and rules -- more memorization). I am a MS Excel guru. Whether it's entering basic formulae, formatting the page and data in it to look nice when viewed/printed, I can teach everything you might ever want to know about Excel, including writing Visual Basic...
10+ subjects, including Microsoft Excel