The National Institute of Mental Health is the leading federal agency for research on mental disorders. This page on schizophrenia provides definitions, answers to frequently asked questions, and more resources.
The National Alliance on Mental Illness (NAMI) was started as a grassroots movement in 1979. NAMI provides education and raises awareness on mental illness. This page on schizophrenia provides an overview of the disorder, support, treatment options, and discussion boards (login required).
SARDAA's mission is to improve the lives of those affected by schizophrenia-related brain illnesses (mental illnesses involving psychosis). SARDAA provides support programs, education, collaboration and advocacy.
Doing an online search for "Schizophrenia chat group" or "Schizophrenia support group" can help you find online forums for support and community.