A digital product is a file buyers download after they pay, such as an ebook, a printable, a sewing pattern, or a music track. Nothing gets shipped, so you skip the weight and size boxes.
A digital product is set up like a simple product, plus a few extra settings. If you haven't listed a product before, start with How to list a simple product.
Start a new product (or open one) and leave Product Type on Simple. Right under it, in Digital Product Options:
Check both boxes. BlackSpace needs both of them, and the file you upload in Step 2, before it will publish a digital product.
Fill in the Title, Categories, Price, and Description the same way you would for any product.
Scroll to the bottom of the page to find Downloadable Options. Under Downloadable Files:
Add a Feature Image in the right column, such as a cover or a preview of the file. Then set Status to Publish and click the button at the top right (Save Changes or Update Product).