Useful links! — Building your first app: http:// developer.android.com/training/basics/firstapp/ index.html — Udacity's Android Videos: [https://www.udacity.com/ courses/android] — Dashboards of versions in use: http:// developer.android.com/about/dashboards/index.html
Photo Credits — Old tyme trainwreck by Tom Brandt: https:// www.flickr.com/photos/12567713@N00/44514845/ — Android support library graphic by Alexey Ustenko: http://www.slideshare.net/AlexeyUstenko/android- support-library