For parents trying to pass on the Catholic faith to their children and to their friends, this simple book will help them how to explain what Catholics do on Sunday and why they do it. The Mass should work at the deepest level of our being, changing us into people who share God's own life. For this to happen, we need to take part in it in a way that is inspired by the spirit of the Church's Liturgy. In simple language the First Section of this book leads us step by step through the Mass so that we may take part in it with a deeper reverence and understanding. Should we wish to dig more deeply, the Second Section is one into which we can dip from time to time to examine the meaning of some words associated with Sacred Scripture and the Sacrifice of the Mass. The Third Section considers some extra spirituality dealing with the Real Presence of Christ in the Eucharist. This book would be very suitable as an instruction text-book in Post-Primary Schools.