This slim volume is a useful contribution to the huge selection of books on the subject of the turbulent mid-seventeenth civil war. It is a concise introduction to "the causes, course and consequences of the conflict" (to quote Osprey publishing blurb). It covers much ground from a military perspective, but the most interesting sections are those insights into the lives of individual people: soldier, citizen, country gentleman. Clearly, the war impacted on most of the population of England and Wales in a way that we can scarcely comprehend.
"Essential Histories", such as this one, do what they say on the cover. They usually provide insight and inspire the reader to delve more deeply into its subject area. It succeeds here.