How do you download new new templates to use on publisher?

Using Google or whatever your preferred Internet browser is, simply search "publisher templates" and you will find a huge amount of free download able content.

There is not a specific update or download for adding templates to Publisher, all new content is managed by an ondemand system. With internet access, click on the File Menu, then select New. In the Search Bar you can enter the type of template you are looking for or select a suggested search to narrow the results. You can also select Built-In and select the type of document to find those specific types of templates.