1. Determine the character and function of your business:
What kind of business are we talking about? Is there a "social good" component? How fast do you think your business will grow? Are you in it for the long haul or are you looking to start, build, and sell the business in a set amount of time? Once you answer these types of questions, start looking for funders who tend to give money to businesses that look similar to yours.
2. Research potential funders with an eye towards finding matches for your business. Depending upon the types of funder you will identify as reasonable targets, here are some sites to explore:
US Small Business Association Loans and Grants: http://www.sba.gov/category/navigation-structure/loans-grants
How to Court Funding from Angel Investors: http://guides.wsj.com/small-business/funding/how-to-get-funding-from-angel-investors/
Top 100 Venture Capital Firms: http://www.entrepreneur.com/vc100
Creative, Independent Ventures: http://www.kickstarter.com/
3. Identify and be able to explain succinctly, why your business will be successful. That is, have a plan which includes a clear mission, sales forecast, and supporting materials that show that you have thought this through and have a solid strategy for success. No matter how good you are at identifying the right sources for capital, your success in procuring funds will depend upon proving that you have a solid plan for your business. *Business Plan Pro is the #1 best selling business planning software on the market and it's on sale here: http://win.paloalto.com/holiday_sale/