An amusing read for the experienced player or DM, with some sage advice and odd items to toss into a campaign. Some, if not all, of these items appear in the card game Munchkin, in the first 3 sets (Munchkin, Munchkin Unnatural Axe, Munchkin 3: Clerical Errors).
Warning: to be used, must be accompanied by the associated Munchkin d20 Players Handbk (D20 Generic System) and Munchkin d20 Monster Manual (D20 Generic System), which are difficult to find, with information that may well be gleaned from the card game, as well. I dunno - I haven't found them, but I'm not so much looking, either.
Solid, well-written, brief, and apparently fairly profitable. Caveat emptor, and like that.