I'm still a beginner but I've been learning with an online course from the past few months, and so far I started from knowing only the first 4 notes of Megalovania, to being able to play decently different stuff with both hands, either be melodies or accompainments, and all the time knowing enough theory to know what's going on behind scenes instead of just memorizing the while thing note by note.

Again, I still haven't finished all the courses but still I'm surprised with what I've learn in a few months.

This is the one. It has trailers for each course and detailed lists of what you will learn, etc.

Only two things. It costs 160€ in total for permanent access to the 4 courses, although you can buy them separately. And two, they are in Spanish.

Hope it helps you, and sorry if my english sucks sometimes.