This book was valuable for me because it gave me an insight on how scientific history and archaeology works, specifically on the subject of Bronze or Iron Age and Archaic Greece. As a Greek I was taught in school to value the ancient Greek myths about the founding of cities, etc or the stories of Herodotus or Thucidides. Although all these are sources for historical research, historians are based more on hard evidence, ie. archaelogical findings. For example the Ancients Greeks held the myth of the Dorian Invasion as an explanation of the distribution of the Dorian dialect in Peloponnese as well as the Dorian supremacy on the peninsula. The archaeological findings however neither show any invasion that caused a major cultural break on pottery, architecture etc, nor burials show a massive depopulation or repopulation.
The whole book deals with a critical examination of what the ancient Greeks of the classical period thought of their past, and with an attempt to picture the situation of pre-classical Greece from the Bronze Age Collapse to the aftermath of the Persian Wars from the archaeological evidence. Whenever there are not enough evidence, the author makes his own hypotheses, that sometimes differ from those of the ancients. For example, Aristotle attributed the tyrants of the city-states to class conflicts. The author, however believes that this is a reflection of Aristotle's age, and that the rise of the tyrants was caused by conflicts within the elite class in the city states. The power of the "demos", the people, came later at the late stages of the Archaic Age.
The book has two major problems. First, this is a textbook at the Unversity of Oxford. That means that is no way "popular science" and makes it hard to read for non-experts, ie. archaeologists or historians. Second, I have read it on an Modern Greek translation, which was quite bad, and made things worse. If one shows some patience, this book gives some insight on what is the experts' consensus on the history of archaic Greece, which I found very different of what I learned at school or of what is in related public discussions in Modern Greece.