Q. How can I search for funding opportunities, like grants, online?

Here are some excellent resources:

Foundation Directory Online
Updated weekly, Foundation Directory Online provides the most accurate details available on U.S. funders and their grants. Over 100,000 U.S. foundations and corporate donors, over 2.4 million recent grants, and over half a million key decision makers.

Grants.gov
Single access point for over 1000 grant programs.