The sequel to Day by Day Armaggedon starts off pretty much right where the last book ended and is told in a similar style to the first book, the story being narrated through a series of journal entries as the main character try's to survive um.. day by day.
If you like the first book you'll like this.
If you haven't read the first book read it before you read this.
Another reviewer mentioned they didn't like the American flag wavery of the book and didn't like the context in which other nations were mentioned (aka everyone but Americans are stupid and suck at killing zombies), I didn't find the book to be like this at all, I personally hate books that read like propaganda and I would have stopped reading it if this was the case, the only thing mentioned that might irk some people was that Britain got pwned by the zombie hordes as the citizens didn't have a right to bear arms... this isn't really offensive, lets face it it would probably happen (and yes I am British, I'd imagine there's only so many zombies you can kill with a frying pan before being overrun).
All in all a great read, the format makes it easy to put down and pick up again and it ends on an excellent cliffhanger that makes me wish J.L. Bourne would get his finger out and finish the third one.
Recommended.