This manual explores the fundamental characteristics of language and speech, highlighting key qualities such as accuracy, richness, precision, logical structure, conciseness, and expressiveness. It explains the unique aspects of communication and presents the functional varieties of speech, including official, scientific, and public discourse. Additionally, it teaches the art of debate and the principles of proper speech etiquette. Intended for students of humanities and natural sciences faculties, as well as for anyone who wishes to speak and write Armenian correctly and expressively.