This is a reasonably compact history of Britain under the Stuart dynasty that serves a fairly good introduction to the period. There's a lot of ground to cover, and the focus of the book as stated up front is the political transformation of the period, from rule by a divine monarch, to a commonwealth, and then to rule by a constitutional monarch.
The half-dozen Stuart rulers play a leading role, of course, as do the royal favorites and advisors at the outset and the parliamentary leaders during the gestation of faction and party. That said, the narrative doesn't dwell on the psychology or even biography of the main actors; I could have used a bit more of it at times, as a way to better understand some of the dynamics driving the players. Given the outsize role it played in the period, I could have also stood to hear more background on the religious controversies (perhaps a Briton, or even a protestant, would bring more of that background with them). The focus of the book shifts smoothly to international relations when it needs to (the 30 Years War, the wars of Louis XIV) and then back to domestic politics (the Civil War and Protectorate).
There is due attention paid to Ireland and Scotland, though always from the English perspective. Internal conflicts in the other nations is there, but in broad strokes: The section on the union with Scotland passed far too quickly in my mind, and I found the sections on the internal Irish conflicts difficult to sort out.
Kishlansky's style is readable but stiff, and there is a tendency for the narrative to bounce around--I found myself occasionally confused by religious sects, political positions, or parliamentary bills, especially when they went by multiple names. The short sketches that start each chapter are nicely done, but sometimes confusing because they lacked context and were generally repeated (with more logic and less color) within the chapter. On the whole, I would recommend the book to anyone interested in the era: it's a good introductory survey that assumes a little, but not too much, from a curious reader.