Hi rebelheart! Thanks so much for commenting!
Brackets is what we used in school. I think the main (aka, the only) advantage of Brackets is how dumbed-down simple it is to use. You type some code and then you can see a live preview of your HTML, CSS, and Javascript in another window!
Does Sublime and Atom offer this functionality? I've used Atom and its UI is really nice and Sublime has really cool colors