Previewing your product will let you see what it looks like to your customer after they've signed up for it.
To get started, click on Products in the top navigation bar.
On the product you want to preview the product page of, click the three dots to the left of "Edit" and select "View As Customer" from the dropdown.
You can also see this from the product editor page:
If it's an online course...
After you're on the Preview page, you can open up the Table of Contents and click each lesson on the left to preview any of the content:
As the admin, you'll be able to click on each lesson from the left contents bar and preview any of the content.
If you're not seeing this page, you may be logged in as a student as well (you'll see /dashboard in the URL after your store link.) More on that here but if you first log out of your student dashboard, you can click to preview your product page to get the Table of contents view instead:
If it's a digital download...
We'll list out the files for you to preview:
It will say "Get access" on the right as it's a preview and not meant to be downloaded at this time, but your customer will see a download button instead, like this: