Shameful as it is for an English person to admit, I am largely ignorant of this chapter of English history - or at least I was until I read this book! Obviously since this book was written there will have been many different analyses of the events of Charles' life, and so some of the theories regarding why things happened as they did might seem very dated to people more familiar with the subject matter.
For an outline of what actually took place and when, I thought this book did a decent job of presenting the information and introducing the major changes in both the church and the state over this period. It was written for what would now be described as a 'young adult' audience, but didn't seem condescending for an older reader.
One fault I would have would be the fact that the author labours the point a bit about the differences between society in the USA (the location of the intended audience) and the UK, although it is impossible for me to gauge how necessary this might have been in a different country and in the nineteenth century, so I'll give Mr. Abbott the benefit of the doubt here!