Independent Writing and Editing Professional
Why on-line? Do you have a business plan? How much money do want to earn? What topics will you be writing about? Do you want to work for an on-line service or publisher?
I think researching a career needs to answer many specific questions about how you will live on that job and what you expect from it. I suggest becoming a terrific writer first. Write fiction, non-fiction and learn to tell a story that captivates people. Find someone who will edit you carefully so that you can hone your skills. After you get published the old-fashioned way, THEN think about an on-line writing career.