Remember that you shouldn't treat any of the Catholic homeschool books as a perfect and complete guide. (This is why I recommend reading a number of them for the sake of balance.) This book has a bias toward putting together your own program and doesn't portray the benefits of using a structured program particularly well.
The resources section in this book is extensive, but is certainly not its strong point. Several of the resources used by the two authors are considered problematic by some Catholic homeschoolers. In terms of the lifespan of the Catholic Homeschool movement, this book is already quite old (published in 1996). We should be grateful that there are many more excellent choices, in terms of programs, books and other materials, for Catholic homeschoolers today than just a few years ago.