This ERIC Digest presents an overview of the process and mechanics of language development, along with implications for practice. Sections of the discussion focus on: (1) when and how language is learned; (2) oral language components; and (3) nurturing language development. It is argued that teachers can help sustain natural language development by providing environments full of language opportunities. General guidelines for teachers, parents, and other caregivers include: (1) understand that every child's dialect is worthy of respect as a valid system for communication; (2) treat children as if they were conversationalists, even if they are not yet talking; (3) encourage interaction among children; (4) remember that parents, caregivers, teachers, and guardians are the chief resources in language development; and (5) continue to encourage interaction as children come to understand written language. (RH)