I don't think there's any such thing as General English. 

Language is what we use to do stuff in life, whether it's organizing a festival, reading a recipe, learning to surf, cheering up your elderly neighbour, or folding origami.

What is it that you want to do?

I've taught English from Beginner to Advanced levels, online and face-to-face, in 13 countries as well as my own. 

I've written courses and developed materials at all these levels for this reason:

Learning should be fun, and it should be about you. 

So decide what you want to do with English and let's begin!