The author has written on the Cortex M0 and Cortex M3 in two books (which I own and have read). Both books are good descriptions of the core of the respective architectures. Much of the information is clearly from the ARM technical documentation. Both books are helpful in condensing the ARM technical documentation for readers new to ARM (e.g. migrating from the PIC), or for less experienced users. Later, when such a reader is more experienced with the Cortex M0/M3 architecture they will be better prepared to get more out of the full ARM technical documentation. Be aware that although there is a chapter on assembly language programming and some C examples, this book is not project oriented and does not focus on any specific vendor's Cortex M0 implementation. It is about the Cortex M0 core architecture.
The author worked for ARM for 10 years (state on the back cover). That explains why the majority of the book is written from the vantage point of the ARM RealView tool set. That said, as a user of the GNU tool chain, I found this book to be mildly useful in that respect. There are a few (but far between) mentions of GNU in this book; the vast majority of this text assumes use of the ARM RealView IDE. Although I am experience enough with ARM to port CMSIS code from one vendor architecture to another a reader unfamiliar enough with ARM may find this book frustrating especially if they do not have ARM/RealView (there is a limited demo version).
With respect to the book's content, independent from the tool set, the text is almost exclusively focused on the Cortex M0 core. That is, to understand the various vendor peripherals you need to have a specific vendors' datasheet (or User Manual in the case of NXP) to get the full story on how to use a specific Cortex M0 product. There are some interesting sections (basic architecture, memory, interrupts, and portions of applications examples) that I found useful reading other sections are best read later (power, OS Support, RTOS, and assembly language programming).
So, I understand why the author wrote the book the way he did and steered clear of vendor specific implementations. The book is intended to educate one on the Cortex M0 CORE and not the peripherals. He needed an IDE to illustrate some key concepts. That is why I rated the book only at 4 stars. My expectation were a book with more general information that can be used to understand the used of one or more Cortex M0 vendor implementations and not spend thousands on and IDE. Indeed if you exclude RealView and IAR (Too pricy for the budget conscious) you need to have a very good understanding of Eclipse/CDT to port many Cortex M0 boards to the various IDE's. This is particularly true for the Olimex low-cost boards. For example NXP and CodeRed are tightly coupled and can be difficult for the beginner for non-NXP/CodeRed produced boards. Case in point, the Olimex LPC1114 Cortex M0 board is a wonderful low-cost board ideal for the beginner. However Olimex supplied examples are written for the IAR IDE (go figure). I found, so far, that only Rowley's Crossworks IDE works out-of-the-box with Olimex's boards and for $100 one can obtain a full personal use license for Crossworks. I contacted IAR and ARM and was told they do not have such a low-cost license.
I believe that Newness Press would better serve their audience if they offered a second version of this book. That would be, for example, a Cortex M0 book for the GNU tool chain and Eclipse/IDE. By adding example project for specific low-cost boards and IDE's (I'd choose Crossworks and Olimex) such an edition would be deserving of all 5 stars.