Primus Annus is a school textbook of Latin by Paine, W. L. and Mainwaring, Cyril Lyttleton. The book is intended for students at the initial level of learning Latin and contains basic sections on grammar, vocabulary and exercises. The authors combine theoretical material with practical tasks aimed at developing reading, writing and speaking skills. "Primus Annus" helps students learn the basics of the Latin language step by step and prepares them for further study of more complex works and texts. With an approachable approach to learning, this book is an essential guide for anyone interested in the Latin language and classical culture.