A friend of mine decided to go kosher and was given this book by a Chabad rabbi, so I decided to give it a read myself and see what it recommended. It is a very good introductory book, which explains a good deal without being totally overwhelming. It makes going kosher sound pretty easy, which is good, because if anyone had any idea of what they were getting into they would never agree to go kosher. But on the whole, it is only a BEGINNER book and does not stand on its own. This is not surprising from Chabad, but the rulings are generally the most stringent ones available to anyone living outside of an enclave in New York or Israel, with no discussion of more lenient (or even mainstream) opinions. It might make someone whose family and friends are not kosher unnecessarily difficult. Anyone considering going kosher should take the book to a rabbi they trust and who is more in line with their own halachic comfort zone.
Also, the book uses the verb "kosherize," which I've never heard before, even though it DOES introduce the word "kasher" very early on. Which is hilarious.