This information is very helpful. Purpose for me, as for many others, is the hardest step, because some of us don't know what we are asking is too vage or not.
It would help a lot if you could write an example for everyone to see. It doesn't matter what kind of books you are using. Just name the subject and type a few things you would be asking yourself before PR the book.
Thanks again for the information, and hopefully, I will be able to find those "A-Ha" Moments very soon.
Rain
