www.grants.gov - An awesome resource!

You can perform a basic search of open grant opportunities from 26 federal agencies here: http://www.grants.gov/applicants/find_grant_opportunities.jsp

You can request a free (private) 30 minute webinar where their staff will talk with you about the "find and apply process."  The presentation request form is here: http://www07.grants.gov/contactus/contactus.jsp