This book really is four in one, and part of me wishes that the author took the time to write and expand on all sections, but on the other hand, I'm glad it's all put together in one tidy package.
Since I'm more into entrepreneurship, this book was recommended to me to help me develop different income sources for my business. The first part of the book was mostly technical tips regarding scammers and Internet information. The fourth part really helped me see beyond my one method of earning money through the business and gave me some good tips into branching out. By far, it was the most useful part of the book for me personally. The middle sections gave real companies and ideas on how I could expand my current offerings through affiliate marketing, selling print-on-demand chachkies, chat-lines for customer support (or charging for consulting) and more. For anyone looking at work at home jobs or just ways to make extra money, sections 2 and 3 are definitely for you. The author gives a LOT of companies to work for, either as an employee or independent contractor.
Overall, this book is extremely useful for the work at home professional or entrepreneur.