I have all Garry Kasparov's Modern chess books. In this book, you will expect the same quality of standard as his other Modern chess books. Put it this way, if you like the previous editions, you will love this book. This book is not a beginner guide to chess or some intermediate guides for boosting your chess skills. Everything in the book is fairly advanced, more suitable for players with at least ELO 2000. Garry has analysed extensively his games against Anatoly Karpov from 1988 to 2009 using computers. The variations are very difficult to visualse unless you are a grandmaster. This book is more like a reference book, I doubt anybody in the world could fully interprete Garry's analysis. This book will not turn you into a better player, but it will give you very detailed background about the last world chess championship between Karpov and Kasparov.
The book also covers the pressure Kasparov and Karpov had from the new generation players in the 1990s and 2000s. The younger players were motivated and equipped with excellent computer preparation. Karpov, the best chess player in the 1970s and early 1980s, could not battle with the new generation. Although Kasparov's dominance over the chess world eroded, he maintained the world number one status until his retirement in 2004.