ulysses, normally yes we'd skip mind mapping a book initally I did it for the heck of it to see what I knew about the book before I actually read it. For the mind map of the novel I looked for 4 key things that usually are in a novel. Characters, Location, Era, theme and general story line.
I did this so that I could recognise what I knew already before I started reading. Sort of proving just how effective the photoreading stage is even for a novel.
Alex