You have a good start and just a little bit more of my opinion - I am not a developer, this is just from a marketing stand point.
Get rid of some of the page links (or all of them) and incoporate that content into your home page.
Espescially get rid of the "Services" link though, or name it something else - your not selling services your selling a book.
The way the services page is right now (the whole site really) - it is almost like the book is an afterthought and not really that important.
"Looking for a book on ->-bleeped-<-?" get that front and center and make that the focus of the site - that is why people are coming there in the first place, right? They are looking for a book on ->-bleeped-<-. You need to engage with them about the book a lot more.
If it were me I would keep the site focused on the book, and I would focus all my good content on the home page and keep them interested there.
People don't mind scrolling down a page if they are interested in what they are reading.