I've read World War Z, I've read pretty much every zombie book out there. World War Z is Max Brooks' (son of famed film maker Mel Brooks) seminal work. Pretty much everything before, Survival Guide include, was trash, and he hasn't put out a new book since, hence my suggestion to possibly check out the other great books I mentioned, including the Day by Day Armageddon series, which is far superior to Max's work.
/My name is 505th.NM.Militia, and as your ADMIN, I approve hot zombie girl off topic posts.