Judging by how much of a scum bag Larry Tang aka "C272" aka "P3nguinsquared" aka "PenguinSquared" is I would I advise everyone to stay away from this book and anything this person touches. This fraudulent scumbag goes around stealing money from people by offer programming services as a freelancer. He convinces you to believe how good he is and disappears the next day after you make a down payment.