Imagine the book as almost a Ken Burns style documentary made after the zombie war, going back and interviewing the people who were there and lived through it collecting their stories.

It's been a while since I read it, but each chapter is a different person being interviewed telling their story, more or less in chronological order. The stories don't really overlap directly with each other, but together they paint a great overall picture of the war from start to finish.

And it's a good cross section of different people, soldiers, scientists, ordinary people, an astronaut who was stranded on the ISS for the duration of the war, etc.

I think everyone who read the book really wants it to be picked up as a mockumentary miniseries in that sort of style with "archival" footage with people being interviewed giving voiceovers and all the other usual documentary trappings.

And the Zombie Survival Guide is also a fantastic companion to it that is basically done as a, well, survival guide, that was distributed during the war, and is referenced once or twice throughout WWZ