Maybe I will read it later, for now I stay with the ones suggested by other users. You can't understand which practices you should and shouldn't follow unless you are an expert
For now, just focusing on the basics of HTML/CSS and especially JS will get you going well enough, and those will all be applicable in web work no matter what specialization you choose.
Those are what we normally consider frontend technologies (though JS can also be used on the backend). If you also want to learn the backend side, having some frontend knowledge still never hurts, if only so you can work with the frontend people better.
This text might be worth circling back to later in your career, once you start considering architectural patterns. But for now you have a lot of other great suggestions :)