Wow this book is meaty. It is a complete book to build strongholds of every type and size. It is complete with resource costs and the build times. It covers things like government offices and employees and the cost of each. It explains what they do which is nice. It also gives skill DCs and levels required to build various structures.
It covers governing too as well as government types, corruption and mass combat just adds to the usefulness of this book.
The only thing this book is missing and the reason I did not give it 5 stars is random tables. I have 30+ kingdoms to create in my world and some I don't have any idea about yet. Some randomness would be nice.