This book provides solid theoretical models for understanding what is occuring in organizations. I read this book over 10 years ago and STILL find it the second best and most enlightening thing I have ever read on organizations. This has dramatically aided me in being a very successful business consultant.
The foundation of this book is the notion that you cannot understand complex organizations in any meaningful way through a single perspective. People in the organizations operate on many different perspectives. Each view of the world creates its own understanding of the organizational problems, solutions and daily pattern of interaction. This book provides you the tools for understanding organizations through a number of key perspectives or metaphors, and gives you indications on how to perform a multi-perspective systems analysis.
If you spend the time with this book, you will find yourself able to understand your surroundings FAR better than your peers.
I found it a very easy to read book, if you are willing to put aside your existing ideas (psychic prison) about the way the organisation works(?) If you prefer big words, read Morgan and Burrell's Sociological Paradigms and Organisational Analysis - essential reading, but even more brilliant as a companion to Images.
Learn the stuff you are expected to know from your finance, marketing, statistics, strategy and HR texts, but understand the stuff that will change your world from Images of Organisation.