how to search products/items on amazon on iphone?

I am new to the amazon thing and I am trying to do the very basic thing i.e. the user will enter some key word for example "Madonna" and I will show the s开发者_StackOverflow社区imilar results that We get when we search "Madonna" at amazon on all departments.

I need the guidance i.e. which product should I subscribe to?

What will be the way to retrieve the results?

You need to work on Amazon Product advertising API, it require sign up on AWS. http://aws.amazon.com/ You will find all information and source code on http://docs.aws.amazon.com/AWSECommerceService/latest/DG/Welcome.html