This a web-based course based on Crossroads: The Psychology of Immigration in the New Century (click link to download free public-access document) published by the American Psychological Association in 2012 (124 pages). Psychologists and other psychotherapists are, and increasingly will be, serving immigrant adults and their children in a variety of settings, including schools, community centers, clinics, and hospitals, and thus should be aware of this complex demographic transformation and consider its implications as citizens, practitioners, researchers, and faculty. This report aims specifically to describe this diverse population and address the psychological experience of immigration, considering factors that impede and facilitate adjustment. The report, which includes the recent theoretical and empirical literature on immigrants, (a) raises awareness about this growing (but poorly understood) population; (b) derives evidence-informed recommendations for the provision of psychological services for the immigrant-origin population; and (c) makes recommendations for the advancement of training, research, and policy efforts for immigrant children, adults, older adults, and families. This report is essential reading for all healthcare providers who work with first and second generation immigrants and diverse groups in the United States.