This is a fine book, but the audience may be limited. It's not the first book about quantum mechanics to read, if you simply want an introduction covering how quantum mechanics was developed, what are typical quantum phenomena, how is quantum mechanics different from classical mechanics, what "entanglement" is, and so on. It's not heavily technical, but you should have a good understanding of concepts from physics, such as energy, momentum, atoms and their constituents (electrons, protons, neutrons), etc.
There are a lot of equations in the book, so if that would put you off, find another book. It would help to know a little bit of calculus in order to allow for some appreciation of the Schrödinger equation, which is absolutely fundamental for wave/particle quantum mechanics. But you don't need to know how to find solutions of the equation. Other than that, most of the required math is just algebra. And if you're willing to take the author's word for the important facts about quantum mechanics that follow from the equations, you can still get a lot out of the book. On the other hand, this isn't a textbook either. So if you really want to learn the subject, get a textbook. But it could be a good idea to read this book first, for better preparation, which a textbook may or may not provide.
One thing the book does well is to give a good introduction to the notoriously difficult subject of quantum field theory (QFT). There's a brief chapter on elementary particle physics. One chapter can't cover this subject as well as other books (of which there are many) that describe in more detail the Standard Model, electrons, quarks, neutrinos, and all the other known "elementary" particles. But it does serve as a necessary preliminary to a decent nontechnical explanation of how QFT is the fundamental framework that underlies the Standard Model.