This book is written by a political scientist and I think this shows through quite clearly in the focus and content of the book. Although there is no specification of it in the title, the book is probably excellent for PhD students in disciplines similar to his, the usefulness is very much more limited for students in, for example, science.
The content of the book is detailed and reasonably comprehensive in many aspects of PhD authorship but I would be wary of blindly following his advice too closely without consideration of whether it is strictly appropriate for you. There are numerous passages in which his personal likes and dislikes in terms of PhD content are stressed but without sufficient acknowledgement that other examiners - and particularly those in other disciplines - might have contrasting, but equally strongly held, convictions. Examples given of thesis structure are less appropriate for natural scientists and medics than for those studying humanities.
In its favour, the book is particularly geared to those studying in the UK. While the differences between the UK PhD system and those of continental Europe and the US are mentioned, the emphasis remains on the UK, in contrast to much of the information available on the internet, for example.
In summary, this is a good, and generally well written, book but I would strongly recommend consulting at least one other on the same topic in order to gain a more balanced range of opinions rather than relying on one person's personal slant.