We can learn some things from its level but for a more comprehensive content and compact, prefer the book "Adventure, survival and creation: The Minecraft Guide".
Which in the end anyway be cheaper than the sum of all these little books of Mojang.
Still, for children, yes they are nice and they have to stimulate the desire to read, then either book is rather a paved more suitable for older children or adults.
I put 4 stars, thinking of the children they are really well suited to all plans.
For adults or people seeking information, it would necessarily Lowest Rated (it has a collection of more value for fans and anyway, issue information, these books do not represent 10% of what you can find on the Net)