The largest organization of social workers, the NASW promotes professional development, creates professional standards, and advances social policies. The web site has links to a plethora of resources.
The Social Work Policy Institute examines issues that relate to the work of social workers, including how to serve people who have multiple or complex needs and how public agencies and other structures deliver health and human services.
"Provides information on all things social work, including direct practice (both clinical and community organizing), research, policy, education... and everything in between."
"The Self-Sufficiency Research Clearinghouse (SSRC) is an ever growing virtual portal of research on low-income and TANF families and an online hub for professional networking among researchers, policymakers and practitioners who serve these populations."