I think you're better off learning through courses. Trying to reverse engineer other site's JS by looking at their source is usually a pain because of how JS so

I think you're better off learning through courses. Trying to reverse engineer other site's JS by looking at their source is usually a pain because of how JS source is served (heavily minified) and it requires you to dig through the entire naming structure of the site's HTML, etc. Just stick with some courses that teach you sound principles.