If you want to edit a product description, adjust prices, and add photos for each of your products, you must log into your Shopify account. Here's how to make those changes:
Log into your Shopify account
Select Products from the toolbar on the left
Select the product you want to edit
To edit the Product Description, simply update the description under the product
To edit the Product Photo, scroll down to Media and select Add Media
To edit the Product Price, scroll down to Pricing and input a new price