The textbook offered to the reader provides the basics of knowledge of the grammar of the Church Slavonic language as a language of worship, as well as hymnographic vocabulary and the principles of educational translation of liturgical texts into Russian. Intended for all who wish to delve more deeply into the hymnographic heritage of our Church, the textbook is intended to give practical skills in understanding it. It has developed in detail the grammar of precisely those sections that make it difficult to understand Church Slavonic worship.