The content of this PDF is perfect if you intend to read it from a laptop or desktop computer. If like me you were hoping to be able to utilize it from an Android device expect it to be very sluggish. I wish they would have presented the option to get a light copy of the PDF without all of the pretty graphics paper styling, that would have perfectly met my needs. The latest revision to the PDF is a big improvement, but it is still very sluggish when trying to rapidly change pages to jump to a specific section.