Q. 1. How come the Catholic Church has so many different Catechisms?
A. 1. On December 7, 1992, the Vatican (Pope John Paul II) released the first new Catechism of the Catholic Church in more than 400 years. It was a complete summary of what Catholic throughout the world believe in common. This book is the catechism (the word means "instruction") that will serve as the standard for all future catechisms.
Prior to the release of the 1992 Catechism, there were a number of regional Catechisms. And since the release of the 1992 Catechism, new Catechisms have been authored as tools to understand the current Catechism.
All of these books are excellent tools to learn the Catholic faith. Some are easier to read and understand while others require advanced education and further reading or research for a proper interpretation of what is being read. Some of the Catholic Catechisms are:
Catechism of Dupanloup
Catechism of Saint Pius V
Catechism of Saint Pius X
Catechism of Saint Robert Bellarmin
Catechism of the Council of Trent
Compendium of the Catechism of the Catholic Church
Roman Catechism of the Catholic Church
Saint John Neumann's Catechism
Saint Joseph Baltimore Catechism
The Aquinas Catechism
The Little Catechism of the Cure' of Ars
The Nazareth Master Catechism
The New Saint Joseph Baltimore Catechism
The Penny Catechism: A Catechism of Christian Doctrine
United States Catholic Catechism for Adults
YOUCAT: Youth Catechism of the Catholic Church