I actually enjoyed "The Zombie Survival Guide".

It's written as a training manual, not a novel. Tongue in cheek of course, but the text is dead serious the way it's written. Which is what makes it fun to read. More than once I found myself saying "I need to add one of those to my survival kit". And then I'd realize, "Oh yeah, I guess I don't really need a weapon tailored for dispatching zombies."