Foundation Center
The Foundation Center connects you to information about free classes and grant makers in the local area.
Washington Grantmakers
This link connects you to the WRAG organization—which has over 500 member organizations from the Washington, D.C. metropolitan area--and its standardized formats for grant seeking and reporting on the ways that grant funds have been expended.
Fundsnet
Fundsnet is an online listing of grants and information that nonprofit organizations need.
Grants.gov
Allows organizations to electronically find and apply for competitive grant opportunities from all federal grant-making agencies.
NIAID Grants Tutorials
This is the best site with information about writing grant proposals that have a health-related components.
A Guide to Proposal Planning and Writing
My all time favorite link that teaches a person how to write proposals and what the key sources of information are.
University of Wisconsin Library Research Guide on Grant Proposal Writing
This link contains a wealth of information on grant writing, preparation, submission and related tutorials and samples.