I've finished this book last week and frankly, this would be one of the books I'd suggest to anyone who want to gain some basic knowledge about bitcoin and blockchain.
I'd rate this book 7/10. And why? Because it gave a clear cut explaination about what bitcoin and blockchain is, the wallet and strings of transaction. It also explained a simple analogy of bitcoin/blockchain system in avoiding double spending.
On the other, this book won't gave you much necessary tools and easy guides on how to create your own blockchain system, how to create genesis block and mined block, the use of flask, test mock server and so on (which you'll know when you want to start coding your own blockchain system)
Above all, this is a good book and easy to read. For people without basic knowledge of bitcoin and blockchain, this book would be a good start for them to venture into this crypto world.