The Foundation Center is an independent nonprofit information clearinghouse that collects, organizes, analyzes, and disseminates information on foundations, corporate giving, and related subjects. Select either "Grantmakers" or "Grants" to begin (our subscription does not include access to "Corporations") and use the extensive indexes. (restricted to use in the Library only; inquire at the Reference Desk; classes will be given extended access for a limited time period. Remember to LOG OUT)
"Over 40,000 opportunities from more than 10,000 global sponsors" - including Federal as well as private/foundation/corporation sources. In Basic Search use Keyword tab if your search terms don't work. Explore "Search Options" and consider including "opportunities that cannot be currently applied for" (restricted to campus users and authenticated HSU remote users)
The CFDA is a compendium of Federal programs, projects, services, and activities that provide assistance or benefits to the American public. Although there are extensive dropdown menu choices using Advanced Search, it is also possible to search more simply. It can also be searched through Grants.gov: select Find Grant Opportunities and Apply for Grants.
From the Dept. of Education has more general information about the entire student aid process, with many links to further information; primarily for undergrads but has something for students at any stage of their education.