how do i display a Interstitial Ad

Getting Started Newbie Questions
#1

how can i display a admob ad on the menu screen so when the person or when they go to gamover

#2

might as well check this link:

https://coronalabs.com/blog/2014/07/15/tutorial-implementing-admob-v2/

#3

might as well check this link:

https://coronalabs.com/blog/2014/07/15/tutorial-implementing-admob-v2/