Good day! Thank you for the link. I know this guide, it is really quite useful, but it is really a very difficult task to learn all of these on your own. Physics is a science that needs a total understanding. If you will miss something in the basic, you will not understand the next theme. I know what I'm saying because I was trying to learn everything myself and I couldn't realize how the model of current flow in semiconductors working. But when I started to study with a physics tutor from preply, he explained this theme to me for just one lesson. Here is the difference between self-education and studying with a tutor.