Amazon Digital-Text Platform Help Needed

I've got a book in PDF that I need Amazon Digital-Text Platform ready. [login to view URL] I also want to be walked through how to add other PDF documents to the DTP area since I write a lot and want to make my material available there for sale. What I'll want to do is get you my book PDF and have you setup an account at Amazon Digital Text above and get my book listed. Once this is done I will want you to show me how I can do it myself with other PDF documents for the future.