Hi, I don't own that book, so I can't give you information about that, but I would recommend going to the New In Chess website; there you can read the sample pages of the book, and maybe that will help you decide whether that book is something you would like to buy.
Buying books?
I also don't own that book, but Kuljasevic is a good chess author and New in Chess usually puts out good quality. Kuljasevic was on the Perpetual Chess Podcast in late 2023 promoting the book; you can listen to it at this link.
Excuse me,Is the content quality of this book good? Is it worth buying?