Hi Lily, Glad to know that you want to submit your app in Amazon App Store. Start here:
https://developer.amazon.com/welcome.html From the landing page, click the Create an Account button. The Amazon Mobile App Distribution Portal is a self-service tool that will guide you through account creation. Once you complete your account creation and accept the Amazon Mobile App Distribution Program Distribution Agreement, you can start submitting your applications.
Thank you for your response! I want to know if your solution can help me put our company's game on the HOME PAGE of amazon website. I not only want to submit a game, but also want to see our company's game put on the home page. Then our game can be seen and downloaded by more and more people.