This comprehensive booklet contains the prayers used by an Orthodox Christian when preparing to receive Holy Communion, together with the post-Communion Prayers of Thanksgiving. The texts are arranged to match the usage of Holy Trinity Monastery and augmented by comprehensive rubrics. Also included is the Synodal document, "On the Participation of the Faithful in the Eucharist," approved by the Holy Synod of the Russian Orthodox Church in 2015 to express her official teachings regarding proper reverence and preparation for the holiest of Christian sacraments - partaking of the Body and Blood of our Lord, God, and Saviour Jesus Christ. This new perfect bound paperback edition is designed for repeated use in personal devotion. AUTHOR: The monks who came to Holy Trinity Monastery from Eastern Europe after World War II inherited a tradition of printing that stretches back almost to the invention of the printing press in the fifteenth century. Through the fathers' tireless efforts, the monastery has been printing and publishing Orthodox Christian books for almost sixty-five years. In keeping with the humble spirit required of a monk, books which are written or prepared by members of the monastic brotherhood are published under the general authorship of Holy Trinity Monastery.