If you love the Mass, this book is an invaluable handbook that is powerful enough to silence personal misrepresentations of the Church's liturgical law. The do's and don'ts of Catholic worship are clearly and concisely explained in Mass Confusion. Jimmy Akin has distilled a mountain of liturgical documents and official church pronouncements to produce straightforward answers to common (and not-so-common) questions. Thousands of parishioners and their priests find Mass Confusion invaluable.
This is a very useful book for Catholics in understanding the Mass and all the changes that have taken place over the past few decades; but it might also be helpful to nonCatholics in understanding what goes on at the Catholic mass. I found it helpful and learned a lot.