Depends on what you're doing. In general, getting a handle on vanilla JS and the HTML DOM first is a good idea, as everything starts there. If you just want to

Depends on what you're doing. In general, getting a handle on vanilla JS and the HTML DOM first is a good idea, as everything starts there. If you just want to make web pages move a little, you can stay there. If you want to do anything with much state or user interaction, a reactive framework becomes useful. Vue is really quite friendly. As to how to learn, I've been doing it too long to have a good recommendation. Probably read a JS book, it's a bit of an odd language with a lot of wrinkles.