I bought this book based on the good reviews in Amazon but I was very disappointed.
I think that if you are an introvert that has no experience with extroverts that this book may have some value. Contrary to the introduction, I felt that it was primarily focused on utilising principles that extroverts use. This was re-enforced by the continual quoting of famous extroverts advice on how to self-promote. This is not what I was looking for. I know how extroverts function, I just also know that a lot of their strategies don't work nearly as well for me as they do for them.
The other disappointment was that a lot of the text was on what I would consider business-promotion, rather than self-promotion. The section on `Self-Promoting activities' listed (in order); Web sites, Advertising, blogging, podcasts, online-groups, classified ads, flyers, brochures... Sorry, but this is not self-promotion as I understand it.
In summary, this is a very entry level book. It may be a good introduction, but I found it very light and not very on-target.