Don't buy this book, it's a waste of your money. I'm not sure how the author managed to fit 229 pages of content on what can be explained in a ten minute YouTube video.
It's very outdated since Epic Games keeps changing the game every season or so and your better off watching some Fortnite YouTuber for tips instead.
Rather than spending 10 bucks on this just buy the battle pass, it's a much better deal