Best Way to learn physics?!? I have taken honors physics and AP physics in high school (although we didn't do much in AP) and Calc 1. Most of physics really interests me. I'd love to learn quatum physics (I'm reading a book on it) but I know there is a lot of math to learn first. So what's the best way to learn as much physics as I can? Currently I'm enrolled to major in Mechanical Engineering but I kinda wanna dual major with Physics. Pretty much just tell me or any general person how to learn physics. Preferably for free. Thanks!!!