Whether you're starting a nonprofit organization or joining one that's already in operation, you'll need to find creative ways to fund it to accomplish the work that supports its mission.Grants generally come from foundations, the government and corporations.Try seeking funding from foundations first. A good place to find foundation grants is Foundation Center. Corporate granting guidelines are usually on the website of the corporation, if offered. Check out the sites of some of the larger corporations in your area to learn what they're willing to support.