I appreciate the effort you put into your work, and it certainly looks complete. Thanks for sharing it. But I hope you formatted the book so it's easier to read than your landing page. Center alignment is hard on the eyes.
I will keep this in mind for my next "design", I'm not a designer and it shows! I can guarantee the ebook is left aligned though :)
- The "Here is a 20-pages PDF preview" is too small. I had to scroll up and down twice to notice it actually.
- The layout of the PDF file is awesome!
Big fan of your work. Will definitely check this out!