Italy is a country steeped in ancient culture and, for the most part, it is a combination of that culture - both ancient and modern, the countryside and the people which visitors come to see. As with any foreign country, the visitor needs a guide book - especially one which is so well written it simply exudes ideas about where to go and what to visit. This book really is the only guide you will ever need.
By comparison to other guide books, I found this one far easier to follow. It really is user friendly. Just as France is far more than Paris and the Eiffel Tower, so Italy is also far more than Rome and the Coliseum and this book will give you the broadest possible outline for each of the main towns and cities in addition to the more famous attractions.
In my own case, I am often in some seaport looking for shipwrecks. Whilst the ships themselves are not included, almost all the local facilities are there to be found.
In short; Thoroughly recommended. Just make certain you purchase the latest edition.
NM