Use a personalized scholarship search, like the FastWeb scholarship search engine. These personalized scholarship search engines will only show you scholarships that you are eligible to receive.
Explore all of the various scholarship and grant searches that are available online. Search for "scholarships and grants" in your favorite web search engine.
Look at the bulletin boards at your high school, college admission centers, and public libraries for local scholarships for which you may be eligible.
Fill out the FAFSA form to determine if you are eligible for federal grants.