Final answer:
To start a new document based on the template you are previewing in the New backstage area, click 'Continue,' choose a template, and then click 'Start Posting.'
Step-by-step explanation:
To start a new document based upon the template you are currently previewing in the New backstage area, you need to follow these steps:
- Click on the 'Continue' button.
- Choose a template, which determines the background of the document.
- Click on the 'Start Posting' button.