Horrible, horrible book. I could not even make it much farther past the free preview. It really seemed to me that the author/editors just worked on getting the "free preview" portion publication ready. After I purchased the book (the preview seemed interesting enough) the grammar and writing style dramatically decreased. I could not even get past the next chapter. It moved from average to third grader in a matter of paragraphs.Do not waste your time. There are plenty of good books out there. Save yourself.