So I understand a little JS, but (I'll probably sound like I have no idea what I'm talking about) what sort of programs do I use if I want to make something like the "Code Your Own Adventure" lesson? Like, do I just use a text editor or something? I know very little about computers and code so...
You just need a simple text editor and then you can run your js in your browser. See the HTML+CSS and JQuery tracks for more.