I’ve finished those two, but what should I do next?
You should probably do CSS next, and just get that so you have the three main Web languages done.
I hope this helps =)
I also suggest CSS next, as @trevorhodges suggests. After that, I suggest learning C++. It is different than web languages, but it is powerful, and being a developer, C++ is a good tool to be able to use fluently.
CSS basics and then Bootstrap. Aligning items on a page with CSS is a royal pain. Bootstrap or Bootstrap themes save you time and hassle.