Rosary is the treasured prayer of the Church. Praying the Rosary together, families have been built up in love and piety. In the Catholic spiritual tradition, the first prayers that children babble are of those of the Rosary. This book is intended to enable catholic to understand what we pray, and why we pray the Rosary prayer, so that we may pray it more meaningfully and joyfully, with deeper love, affection, and respect to our Blessed Mother. The book is primarily apologetic in nature, showing essentially how the prayer is Scriptural, and in the minimum explanation possible, attempts to answer some common doubts raised by our brethren outside the Catholic fraternity. This book is not an exhaustive theological treatise on the Rosary. It is written from a layman’s perspective trying to include in it the necessary biblical and theological explanations. In the process, I have relied heavily upon the Catechism of the Catholic Church to substantiate my arguments, since in it we have the official teaching of the Church.