Continue shopping button

Hi,

You could use your browser inspector to get the HTML of that button, then turn on the "display view files" to know which view file you want to edit in order to add that button where you want it, and add the HTML at the top of that view file via the menu Display>Views for example.

You could also configure the Joomla breadcrumbs module so that you would be able to see where you're coming from as a breadcrumb with the possibility of going back, which might be even better than a generic button with always the same link.