I’m having a tough time understanding the link between:
Ion-Nav-View
Ion-View
HTML Templates
Navigation with Back Buttons
Can some please elucidate the connection between these items?
Thanks!
IonView is a child of Ion-Nav-View. Ion View is going to be the directive you use in your templates. The HTML templates are defined by angular routing.
Take a read up on the docs, http://ionicframework.com/docs/api/directive/ionNavView/
If you have any more questions let me know 
Here’s a good video that describes angular routing and the templates: https://www.youtube.com/watch?v=dqJRoh8MnBo#t=1592
If your new to angular I recommend you take CodeSchool’s free course. Coming from tradition HTML5 development into a MVC framework like Angular can be a bit confusing, and take awhile to grasp.