How do I create a postcard template in InDesignCC?

I'm also a NEWBIE here; so I am trying to find some good tutorials on how to set up a basic postcard template (4up) in InDesign.  I've seen several youtube videos on setting up booklets, etc., but when I try to just design a simple postcard template I'm hitting a brick wall.

When I try and open "file-new" and then try and set up a preset template, it is not giving me that option?

Help!

Thanks

Tina