1) "About the book", "About author" (graphics) and in general, the text on all the pages was hard to read for me.
2) I think you should be consistent regarding placement of your nav bar. In other words, why do you have it at the bottom on the home page, but the top on other pages?
3) The page seems to be "jumping" horizontally when moving from other pages to "The Book" page.
4) Maybe it's just me but the red on a black background didn't sit too well for me. Unless you are trying to portray a certain thought (as in death and darkness due to contracting an STD

), I would probably use a different color combination. Perhaps, though pre-marital sex is bad, you should focus on the +ve of not doing it, than the -ve. Then again, this is just me

I hope these help.