1. Changing a document’s template.
  2. What is the current document Template?
  3. Showing the Developer tab.



These apply to Word 2013 and possibly Word 2010. 
I'll add more as I think of them

  1. Changing a document’s template:
    On the Developer’s tab on the Ribbon, On Templates section, click on Document Template.
    Click on Attach and choose or browse to the required template.
    Suggest enabling Automatically update document styles so that the new styles are applied.
    Press [OK].
  2. What is the current document Template?
    On the right, click on Show all Properties.
    The template name shows under Properties (You can’t change it here though).
  3. Showing the Developer tab:
    File –>Options—>Customize Ribbon
    Enable developer in Main tabs