Applying for College? Here's Financial Aid Information
If you or someone in your family is applying for financial aid, your first best resource is the FAFSA. Your high school counselor can help you.
Also, if you know which college you plan to attend, search their site and call their financial aid office. They very likely also have a "financial aid calculator" on their web site that you can use to estimate costs.
If you want a database for scholarships to apply for, try Scholarships.com to apply for additional funding.