This thorough article provides an overview of the contents, structure and themes of the Rosh Hashanah and Yom Kippur prayer services. Highlighting some of the most significant parts of the service, such as the shofar blowing on Rosh Hashanah, the haunting «U’netaneh Tokef» prayer, and the closing «Ne’ilah» prayers at the end of Yom Kippur, this is a helpful resource for those who like a refresher from year to year or will be attending synagogue services for the first time. With a summary of the Torah reading portions and audio recordings of several liturgical songs, this article provides an excellent spiritual and practical preparation for the High Holidays. Written by Rabbi Iscah Waldman from the Conservative Ansche Chesed Synagogue in New York, this article was published on My Jewish Learning, a website empowering Jewish discovery for anyone interested in learning more.