How can I become a successful independent professional recruiter?

If you have no previous recruiting or staffing experience and you want to break into the arena, I suggest you to follow a state-of-the-art training program that will put you ahead of the curve as a certified Search and Hiring Job Market recruiter.
Personally I just followed a three-stage training program designed to learn the best practices of recruiting at each stage of the recruitment life cycle.
After that i suggest you to have access to workbooks, live training webinars, articles, videos, and other resources to help you along the way.