Are you asking how to just improve your English in general or asking what to do about being on this board with Bad English? As for learning I'm sure there's plenty of youtube videos that can help you but the best thing is just to keep reading and look up words you don't understand in a dictionary. Google translate can help you a lot as well if you don't understand things.

What languages do you speak? If you find English hard there are local boards for non english speaking members.