Where 'new document' has Ctrl+N to start a new document, is there a keyboard shortcut that will present me with the templates windows to select a template to create a new document with? A search for answers here and elsewhere online hasn't yielded anything useful yet.
Do you mean to say you want the following File/New dialog to show up on pressing a keyboard shortcut?
That's quite easy to do! Most people don't know that keyboard shortcuts can be customized in Office apps as per user preferences. For example, I didn't like how Word 2010 popped up the Navigation Pane (Pain?) when I pressed Ctrl+F, instead of the simple Find and Replace dialog that older versions did, so I simply remapped the shortcut to the older dialog and now all's fine with the wor(l)d! :)
Note #1: If you go through the default mapped shortcuts, you'll see that it's very much possible to assign multiple keyboard shortcuts to the same command.
Note #2: To duplicate the Find dialog fix I mentioned above, simply assign the Ctrl+F shortcut key to EditFind instead of the default NavPaneSearch, or you can assign a different shortcut to the former if you prefer quick access to both old and new Find dialogs.
Ye, by using a macro (or many depending on how many templates you need to access).