Martin Olson will do for Hell and demons what Max Brooks did for zombies. Encyclopaedia of Hell, from a first-person account by Lord Satan, is an "invasion manual for demons concerning the planet Earth and the human race which infests it." The bulk of the book covers a "Manual of Earth Terms," from Accordion ("Alpine torture device") to Zero ("The combined IQ of humanity"). You will get invasion maps and diagrams, and commentary from Satan's most trusted commentators: ZYK, Lillith, Belial, and more.
And yes, you are supposed to laugh when you read this volume.