Now, Knockabout Press has published The From Hell Companion, a wonderfully detailed and endlessly fascinating account of the comic's creation.
There's lots of insight into the way that Moore and Campbell collaborated, lots of amazing stuff about Moore's own inscrutable wizardry, and, best of all, the book reproduces the drawings that Cambpell's seven-year-old daughter Hayley made, sitting at her father's side while he worked on the book. Some of these were previously published by Campbell in a 2006 blog post, but they're not a patch on the reproductions in the book itself.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.