Hello Sir,
I can be your teacher as I have learnt Android application development using the internet. There was nobody who could guide me in this. Therefore, I got so many problems and bugs but now as I have developed so many android application and two of them are available in play store. That is Udghosh and Inter IIT. You can check them out.
You can also see the screenshot of one of the applications in my portfolio.
Please have a look. I will help you wherever you need me.