Autism Speaks provides resources for parents and professionals living and working with children with an autism spectrum disorder. Their tool kits provide great resources for newly diagnosed families including resources to share with extended family, safety tips, and assembling a team to provide treatment.
Real Science, Real Hope
Association for Science in Autism Treatment, an organization of parents and professionals committed to improving the education, treatment, and care of people with autism by providing up-to-date, science-based information.
Talk About Curing Autism (TACA) is a national non-profit 501(c)(3) organization dedicated to educating, empowering and supporting families affected by autism. This is a good place to start for families who have just received a diagnosis of autism.