Are you using Shopify because you love entering data one product at a time, or because you love uploading CSVs? No. You use Shopify because you are in the e-commerce business and your goal is to sell. So let us help you add and update the information in Shopify fast, all with the help of Airtable's super-intuitive spreadsheet-like interface.
Here is an example of how to update your product's information. In your Shopify-enabled Airtable base find the sheet corresponding to Products. Find column whose title corresponds to the value you are trying to change. Make the necessary modifications, and when you are happy with all the changes kick off the Airtable-to-Shopify sync. You'll see the information in Shopify updated.