I started to use this book and came across a few errors. These resulted in errors in the output. I went to the website to find the errata for the book but there is no errata as promised.Also, the book states that the scripts can be downloaded from the website. I could not find them.I think anyone wishing to buy the book check out for errata, if they can find them, on the website. I didn't and I probably would not have bought the book if I had known there was no support from the publisher.I have always had a bad experience with Mc Graw Hill.