I like the way Dayley pulls together all the components needed for MEAN development. His examples are simple and clear. The only two problems with this book are (1) it has not been edited or even proofed, so it's filled with typos that can confuse newbies, like me; and (2) Angular and Express have moved on such that a few of the examples either do not work or rely on deprecated features.
One of the worst organised books I've ever read. There are lots of repeated information, the order of the topics is completely not logical nor useful. I recommend reading separate books for each technology and combine them on your own.