Creating a new Easy Digital Downloads download product is really easy.
You can get started right away be using one of the download page patterns that appears when you create a new download. All you then have to do is add in the content for the download page, fill out the rest of the Easy Digital Downloads fields and you’re good to go.
Otherwise, you can craft the download page using various patterns. Just make sure that you have a “buy now” or “add to cart” button somewhere on the page. And you need to deselect the option to have that button appear on the page automatically, otherwise it’ll be added to the bottom of the page.