Warning: Don't you ever buy this book for your kids!
you'd think it's a normal little scary book with some fun, no! not at all!
I've known people who knew and practiced some kind of dark things, and that included writing sigils similar to those in this book, even if it wasn't directly harmful for your child, it affects his unconsciousness in the long term ,the book teaches the children how to write those sigils, which would invite them to your house!
Even if you wasn't convinced, just give me one reason for such a book and why it tells your children to write those kinds of shapes!