You can add as many pages as you like within the 'Info Pages'
in your back office go to SHOP SETTINGS > INFO PAGES
Click on the green button 'NEW PAGE'
Give your page a title and write the content you need (you can even embed a video here or paste in any HTML code you may want to use)
Click to SAVE CHANGES
...and you're done.
The page will appear at the footer of your website together with the other info pages.