I would have given this book 4 stars. It contains some good and useful information. The author recommend using Wordpress to build your blog. It's a popular platform, so that's probably sound advice. However, the author fails to notify readers about the crucial difference between Wordpress.COM and Wordpress.ORG !!! If you start constructing your blog through wordpress.COM, you will likely spend a lot of time picking a theme and starting to write and organize your posts, only to discover that wordpress.COM does NOT support any ways to monetize your site. You can NOT place any adds on a wordpress.COM hosted site. Of course, that defeats the whole purpose of having a "blog for profit". You will also waste a lot of time trying to move your site off of wordpress.com afterwards.
If you want to use Wordpress, it's crucial that you go to wordpress.ORG and pay to set up with one of the hosting services that they recommend, to be able to monetize your site.
Though the author is a "DIY" and "spending less" blogger, she admits that she does not do her own website design. Maybe she was simply unaware of the two Wordpress options. If she had prior knowledge of that, then I feel it is negligent of her to not stress that difference to her readers.