I wouldn't recommend Alan Moore and Eddie Campbell's From Hell to anyone under 18 (and if you are under 18 please remove any reference to the book from your brain immediately.) If it were possible for someone to read the 40 pages Moore's annotations and appendix without any attachment to the graphic novel they would find said notes to be informative and entertaining on their own.
Or at least I did, anyway.
The book is about the Jack The Ripper murders and the subject matter provides a huge tangle of facts and theories. What's fun is to read Moore's thoughts regarding the usage of that raw material in the creation of the book. Moore is also great at crediting friends and associates for passing along books and tips.
And you just can't beat writing like this:
"The history of Freemasonry is an impossibly convoluted web, a situation that is not helped by the extreme eagerness of Freemasons themselves when it comes to establishing ancient precedents for their order." From Hell - Appendix 1 - Page 12 (Top Shelf Productions, 2006)