This is a serious book on developing your memory skills. Using the author’s memory technique (what he calls mnemonic systems), he shows how to learn such things as the Ten Commandments, Seven Capital Sins, the Beatitudes, the Twelve apostles, the Forty Six books of the Old Testament, the Books of the New Testament, 21 centuries of Catholic history, etc. etc. Using the mnemonic system you can memorize virually anything. Has a section on teaching this to your children. Paper.