To access the 'Confirmation Email Order Settings', from the store dashboard go to:
> Store Settings > Orders & Emails > Confirmation Email

The first setting at the top labelled 'BBC to' allows you to blind carbon copy the 'Confirmation Email' to an email address of your choice.
*Use the 'Help' box on the right for more information*
(*Don't forget to click 'Save Changes' after making alterations*)