Thread: How do I add a description?

I have a thumbnail and I would like to be able to add some description to each item that will be sold. How and where do I do this.
Ideally, I would like to click on the thumb and have it open and have the larger image with the description. How do I do this??
ourenchantedchildren.com
I finally got this published, but there is soo much I need to correct with this site.

Hi, create a new page with your larger image & some text info, placing all the info in the top left corner of the page. Publish this page.
Now on your page that you are selling items from, link from your small image or text as you would to a new page, (the one you just published) but also select/check the "open in popup window" & adjust the settings to your new page. Preview & test.