I want to build a website such as www.pursebuyers.com

But I don't know about how to build the eBay affiliate program through developer.ebay.com.

I have joined all ebay.com, ebaypartnernetwork.com and developer.ebay.com. I have followed the tutorials, but I still don't understand. Because I am not a programmer. I am an internet marketer and businessman.

So please advice me step by step to acquire a JavaScript through developer.ebay.com (such as pursebuyers.com). I know how to put a JavaScript to html page. Thanks.