Amazon Seller Account Set Up

Currently have approx. 100 products on our website available for download or to be printed and posted.
Would like to list these products on Amazon/Kindle Market.
Some are professionally designed, others are simple format.
Amazon sellers account is set up and ready to go...
Need someone to fill out the forms and list the products from the website
We currently have no product ID's are these are unique products - may need to set up barcodes or something similar, advice appreciated.
All photos and information on the website, very popular product in the catagory.