Use this code snippet by clicking on the "Source Code Button" <> in the text editor for the shop page.  

Add a product section to that page by pasting in this code: 

<div class="col-sm-4">
<div class="panel panel-default">
<div class="panel-body">
<div class="thumbnail"><img class="img-responsive" src="/files/77/" alt="Phi Alpha Tee" width="100%" />&nbsp;</div>
<h3>Phi Alpha T-Shirt</h3>
<a class="btn btn-primary" href="/forms/phi-alpha-t-shirts/">Buy Now</a></div>

Create a form for the product following the existing t-shirt form.

Change the link to the new product form.

Change the image to the new product image.