The first step to a successful paper or any other type of project is to know your subject -- which can be difficult, especially if you've just been told to develop a business plan for the BBQ restaurant down the road, analyze the growth of small businesses in China, or some other topic you're unfamiliar with.
A good place to start when faced with an unfamiliar subject is background, or reference sources like encyclopedias, subject dictionaries, and bibliographies.
This page includes some of the best reference sources for starting business research projects.