This book is about International Organizations as we see from the title. It organize all kinds of actors - from international organizations to civil society or NGOs. I have never seen a book like this which is well-organized. For example, it have highlighted headings and sub-headings, easily understandable boxes (tables and figures) and finally, suggested further reading is also helpful part of this book and make it perfect!
Of course, it will not be easy for basic-level students of IO, however, it must have been helpful to them. No pains, no gains! Some students will think it should be like 'google' website - which must be easily searchable through just typing and clicking, but, if you read, this book suggest us with valuable commments in each introductory parts.
Studying only power politics will be concluded with biased knowledge. I highly recommend this book to read.