I disagree. The Idiot’s Guide tells what the Catholic Church teaches, and also what real-world Catholics do. Here is an example, regarding contraception:
Following Vatican II, Pope Paul VI gave a strict interpretation of these teachings in an encyclical called Humanae Vitae (Latin for “of human life”). The pope declared, “Each and every marriage act must remain open to the transmission of life.” Humanae Vitae set the church spinning. There were questions from bishops, theologian, pastors, and congregations that still have not been answered.
Sociological data reveal that approximately 80 percent of practicing Catholics do not follow the church’s official and authoritative teachings on birth control. Catholics report that their parish priests support them in the decisions they make in this matter. However, abstinence and the rhythm method are the only acceptable forms of birth control.