So I know when you make a book cake, or at least the way I know, is you make the spine and TOP cover one piece of fonadnt and the bottom "cover" is actually just strips to make a border to look like a book cover.
How does this work when you are stacking 2 books? Do you still do this and if so HOW?

I wrapped mine completely in fondant. I didnt do strips. I have two books stacked...the first wrapped then the second book wrapped in fondant on a cake board seperating the two. Hope this helps