This booklet for caregivers of infants and toddlers with disabilities is intended to provide an overview of early childhood development, from birth to 36 months of age. The booklet is organized into 3-month age spans for the first year, 6-month age spans for the second year, and a 12-month age span for the third year. For each level, typical milestones, skills, and suggested activities are provided for the following developmental areas: (1) personal and social skills; (2) language and understanding skills; (3) small muscle skills; and (4) large muscle skills. Contains 14 references. (DB)