This document provides an overview of key aspects of Catholicism. It begins with definitions of important Catholic terms like Apostles, Catechism, Eucharist, and Vatican. It then addresses questions like the Holy Trinity, the role of the Pope, the seven sacraments, transubstantiation, rules for communion, the process of becoming Catholic, requirements to become a priest, whether women can be priests, differences between Catholic and Protestant bibles, how confessions work, and why Latin is the language of the Church. Sources are provided at the end.