AMAZON HELP

Hi. Not sure IF it's an eCommerce Marketer I need but couldn't find a category to fit. This is a small project I'm afraid but should be easy money for someone who knows what they are doing. I've recently posted a product to sell FBA on Amazon but am really struggling with the whole process. I want to change the submitted wording, maybe add a special offer and just understand what I'm doing to try and improve the dribs and drabs of sales I'm currently making. Just need somebody to maybe talk me through the steps and advise on how to complete and edit my listing to maximum effect. Will then retain this person for ongoing advice as I begin to post new products onto the site. Thanks for your consideration.