f) Their aim for the course registration etc.
2. Choose your niche:
Agreed that teaching English online is what you want to build a business with, however, there are different purposes people look forward to while they sign up with you. Some may be looking to just get good at spoken English, some might want to strengthen their foundation and grammar, some might be interested in your tutorials as they might be aspiring to take up competitive entrance exams and many more. So, carefully research every niche and see which interests you and you will be able to get an assured return on investment and then choose your niche. You can also choose to be multiple niched.