[Q] How to add/create "how-to" popup at the beginning of an app? topic

I have a question about How to adding/creating "how-to" popup ("Swipe down from the top to exit full screen") at the beginning of an app?
I was just checking out Google Play Books app, when I opened the app, a pop "Swipe down from the top to exit full screen" appeared. I was looking for something like this to implement on my app.
If there is someone who know how to do it or any tutorial or anything like this, please help.

Thanks