The WordPress Affiliate Guide is an ebook and bonus written out of long experience with WordPress. Known as the owner of Optiniche Teli has had a low profile and just worked on her sites and helped her students create various types of site.
One in particular in the Guide is a data feed site another is the subject of a special PDF bonus on building Silo websites using WP.
The latter was my main reason for buying the product.
She covers Silo sites in a simple no nonsense way using wp pages but she does go into code hacking blithely assuring the poor terrified reader that it is so easy.