Based in Washington, D.C., the American Psychological Association (APA) is a scientific and professional organization that represents psychology in the United States. With more than 154,000 members, APA is the largest association of psychologists worldwide. Their website offers a portal to topics and issues in the field, publications, education, research information and more.
The Athabasca University Psychology Resources list was designed for AU students majoring in psychology, but it is available to anyone with an interest in psychology. The site contains links to over 20 different sub-fields of psychology from Abnormal to Environmental to Social and Clinical. The site also includes links to demonstrations and tutorials, writing resources, journals, and organizations.
Boeree has built an "e-text" site about the historical and philosophical background of psychology. It was originally designed for his own students but is open to anyone with an intellectual interest in the discipline. It contains sections on the Ancients, the Middle Ages, the 1800s, and the 1900s and includes timelines, maps, biographies of significant people, and articles on major issues in the field.