I thought about giving this a 3 star rating, but when I compare it to other textbooks that I have read cover to cover in the past this was better than most so it gets a four star. The lack of a star is for the lack of practical examples of things. I'd like to have seen more formatting examples, press releases and things of that nature coming from the private sector. I have plenty of examples of things from the military public affairs community but I don't want to draw strictly from them when trying to determine best practices and search out innovative and effective techniques.
If nothing else, this is a fantastic overview of the entire career field and does a good job of explaining it's importance, it's role in government, the private sector, and it's history since it began to organize as an actual career in the United States.
If you aren't working in or planning to work in the industry then I'd say this book is not for you at all.