This book came not only highly recommended by my counselor but from my graduate school as well so you know this is a good book for someone getting into the field. I also think this book could be helpful because it is written in layman's terms but it depends on what you are looking to gain out of the book.
This book looks at repetitive patterns that happen over the multigenerational transmission process. Patterns that seem to repeat themselves over time and are passed on. Why they happen, what to look for and what questions to ask. Genograms can be extremely revealing even if all you have are only facts. Correlations and assumptions can be made and drawn upon.
I'd recommend this book to psychology type students and maybe individuals in the therapy process.