https://github.com/futurice/android-best-practices

http://www.slideshare.net/SeanKatz/android-best-practices-2015?qid=98a113a6-fbfa-4997-bbfd-d3cc8cd9454c&v=&b=&from_search=4

http://www.innofied.com/13-android-development-best-practices/

http://www.slideshare.net/Rapidvaluesolutions/best-practices-for-android-ui-by-rapid-value-solutions?qid=98a113a6-fbfa-4997-bbfd-d3cc8cd9454c&v=&b=&from_search=6

http://www.sitepoint.com/5-resources-for-android-developers/

https://github.com/roboguice/roboguice
http://www.tutorialspoint.com/android/android_best_practices.htm

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http://developer.android.com/training/best-performance.html

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start begin learn stduying

http://www.tutorialspoint.com/android/
http://www.vogella.com/tutorials/android.html

=====Libraries

https://github.com/JStumpp/awesome-android