Hi Bobalong, not a silly question at all.
Ideally the 'map' on the cover would be interactive so that you could click on locations like on the website, but that's not possible in the ebook format - so the 'map' is just a static image to give a rough idea of the locations.
The contents page gives you a list of the locations listed so that you can see the town names without having to scroll through.
Incidentally, you don't have to physically print the ebooks off, they are designed to stay on your mobile device when downloaded for offline use. Of course if you prefer a paper option that's fine too.
If it ain't broke..... Don't fix it!