Human aging is a complex, multi-faceted experience that unfolds over an entire lifetime. While human aging is universal, it is also wildly variable, shaped by individual, social, cultural, political, geographic and historical contexts. Gerontology: The basics explores the field of research, education and practice which takes on the complex and multi-faceted questions, issues and problems of adult aging and old age. Intended for anyone interested in understanding the origins of gerontology and its unique purview, we invite the reader to join us in a critical examination of what we think we know about becoming and being old and, perhaps, be inspired to engage more deeply in their own travels through the life-course.