Most people considering this book should already been familiar with Fake Steve Jobs in his original blogging form. His writing works better in that medium than in this novel -- Fake Steve Jobs is funny when commenting briefly on events in the news, but he's too thin to support an entire novel. The book is episodic, as FSJ deals with various groups though a period corresponding roughly to 2006. We see him dealing with Apple engineers and executives, with lawyers and government prosecutors, rock stars, silicon valley plutocrats, and politicians. With the exception of Larry Ellison, who appears repeatedly, and some fictional lawyers, most of these people get one scene with FSJ then depart the tale.
The funniest parts of the book, in my opinion, relate FSJ's interactions with Hillary Clinton, Yoko Ono, and a fictional retired chip executive named Misho Knedlik. These exchanges all involve nasty insults being launched by characters against each other (FSJ is typically delivering the rockets, though he is sometimes their target as well). Author Daniel Lyons has a gift for amusing nastiness.