At first you need to get a good education and become a expert.
Then you apply your knowledge to create a profitable business.
The entire information product business is a education business.
The only difference is that there is no physical classroom
The knowledge is transferred online via ebooks and information products
You are actually teaching people something via your ebooks and information products.
So instead of viewing yourself as a marketer, think yourself as a teacher
Your job is to teach the world about whatever topic you want to teach about.