First I have to say that I´m not a Naruto fan. Nevertheless I read this novel and really liked it.
The novel tells the same story as the first few manga volumes. Naruto becomes a ninja and soon he has to do his first job: protecting workers that build a bridge. And they have to fight the strong and dangerous ninja Zabuza.
I don´t really know anything about the Naruto universe, but I think that this novel is a must-read for true fans. And of course all others, too^^