Hello...I want to build an Android app that meets these requirements:

-Delivers "push" notifications to subscribers / end users. (example: members of a golf club).
-Contains a "QR" code for new users to scan to get the app.
-deliver to Android ver 1.6 and higher on mobile smartphones.
-allows a "mockup" or prototype app to "demo" to prospect to convince them to buy app. Final App must be uploadable to the Android App market.

I am not a coder but have a technical background spanning biochemistry to robotics to report writing in SAP.

I seek a book or course to learn how to build an Android app with the features above.

A company is trying to sell me a "drag and drop" software "system" for 1000 USD that builds the app in 1 hour with the above features. I'd rather learn how to build the app with the features I need to better understand the mechanics of an Android app.

Any suggestion would be graciously received.

Thank you in advance.

As per the your Android app requirement concern i would like to recommend one mobile app development company that is Openxcell. According to me Openxcell provide great Android app solutions which you want at very affordable prices. If you need more information about this company then visit its website.

for me "beginning android game" is quite a good book if you r looking for game apps

You can go through the tutorials. It will help you a lot.