How to learn android development efficiently? : <p>It's been around 1 month that I have started to work on Android to create an app, I understood the basics (Views, widgets, intent ...) and I use a lot developer.android.com to ancknowledge new things but when I try to do complex things, such as creating a camera preview inside my app, I feel like I am Ctrl+C and Ctrl+V the code that is provided without really understanding it. And most of the time my app crashes.</p>

<p>So, do you have any tips for me to make things easier ? </p>
