I am afraid I will have to completely disagree with 'Both and'. As someone with a few months riding experience he is hardly in a position to comment. I have seen the previous version of this book and it was not as well presented but still useful.
I use this book on a regular basis while I observe (advise) people who are looking at doing their Advanced Motorcyclist test with the IAM. It has little pearls of information and when these are strung together by a competent (advanced) rider the result is amazing. Each chapter ends with pointers telling you what the examiner is looking for. The pictures show real glimpses of advanced riding. It is something I still refer to even 3 years after I passed my advanced test.
This book will be appreciated by the rider who is aware of their shortcomings and therefore their weaknesses and is willing to improve. Posers with 5 inch chicken strips need not buy.
Once you are able to control the bike without it being a chore this book will take you to a new level of riding. Nothing like what the boys in blue(yellow hi vis) enjoy but enough to make you safe and quick.
FYI the 'mincers' you refer to in the book are Jon Taylor on the K1300 (Chief examiner for the IAM) the man who has trained more bike cops for the Met Pol than you have started your bike.
Put the book away for the year and read it again in the fall. It will make more sense.
This book was recommended to me by my instructor when I did some more advanced training a year after passing my test. Easy to read, with clear, helpful illustrations, I found this book really useful for consolidating what I had been taught. There is no need to adhere slavishly to all the IAM stuff - if you have been taught properly, the principles are the same whatever the phraseology. Much easier to absorb than Roadcraft.