Oscar Lukefahr is a Catholic priest and a very well known theologian in the United States. In this book, he gives a good overview about what Catholicism means, a good information for Catholics and non-Catholics who want to know more about the belief. He refers to the Catechism of the Catholic Church and gives on overview about the Bible, the history of Catholicism and how it can be incorporated into modern day life.
A very helpful book, 200 pages of theology for lay people. Easy to understand, it answers a lot of questions you always had about "God, the Bible, the life and teaching of Jesus, the Church, Mary, the saints, life after death, the Sacraments, moral living, and Catholic prayer".
The author has also written a good book about the Catholic Mass "We Worship: A Guide to the Catholic Mass".