Step 1: 

Retrieve your links from Amazon. This will require you to be logged into your Amazon affiliate account. I have found that the SiteStripe feature of Amazon Affiliate accounts is the best way to do things. You just have to make sure you're logged into your Affiliate Account (should correspond with your personal account). If you run into any issues getting SiteStripe going, read here: https://affiliate-program.amazon.com/help/stripe.html

This is what it will look like once you have it setup right. You search anything on Amazon and their will be a toolbar at the top of Amazon that will let you get any type of links: 

Step 2: 

Use the "code" widget in Therapy Site Builder. Drag and drop the code widget onto a blank part of the page. Copy the code from your Amazon affiliate account that is provided. Paste the code into the Therapy Site Builder area where you dragged the code widget onto. A code box should automatically pop-up when you drag it onto a blank part of a web page.

Step 3: 

Preview your page. Click through everything and make sure it all looks and functions as you desired.