The rapid growth of the older population heightens the urgency for training in aging research. This publication outlines the opportunities for extramural research training and career development that exist within the National Institute on Aging (NIA). The NIA supports research and research training primarily through the award of grants and fellowships. Congress encourages the Institute's support of a wide range of research, including studies on Alzheimer's disease, long-term care, frailty, osteoporosis, nutrition, and rural health. Several NIA programs are aimed specifically at encouraging minorities to participate in aging research. Grants are awarded to nonprofit and for-profit organizations, universities, hospitals, research foundations, and agencies. Extramural research activities are developed by four NIA programs: (1) Behavioral and Social Research; (2) Biology of Aging; (3) Geriatrics; and (4) Neuroscience, and Neuropsychology of Aging. Each research grant application is subjected to peer review at two levels. Three review cycles are held each year. Awards for regular research grants, from initial review to start date, take approximately 10 months--decisions on individual predoctoral and postdoctoral fellowships can be made in 6 months. This booklet specifies the steps in applying for research grants and gives a synopsis of current extramural training opportunities, career development awards, and special programs. (RJM)