No, you make it to difficult. You walk in the Barns & Noble. You looking up, those are the sub-category of the entire column of all books that is in front of you.

Just look at your height to those sub-categories. 

You decide right there. You buy something in the bookstore session, one of those you-love-art things, and starting with that bag over that sub-heading. This is the categories you coming back with that purchase bag, you going to this "ID tag" in front of this Dress White shirt Book Counter in the middle of the Barns & Noble, not the check out counter.

You say "under this sub-heading" I have this word "biography", is your computer system when I look up the Amazon, this is where I can tell you that sub-head relevant words, to find my books and per-order it, becasue you may not have that here. 

You just say that is "Metaphysics". Do you have that sub-heading I just give you an example, or  "New Age" or "Psychi Talk" or "Angel talk", one of those, near the Metaphysics. What is the exact words you have in that sub-heading?

So you just opening up your mouth in that counter talking.

You walking back to this you staring at your own height to the very TOP.

You decide how to just make a decision, in one walking around this all isle looking straight up. Where is the book session you mean you will write about it. 

Not that difficult, just go back to that column once you decide that day, you can only have one experty to really publishing in that categories? The sub-heading under?