https://twitter.com/minSdkVersion - The minimum SDK version for the practical, rational developer.
https://twitter.com/targtSdkVersion - The target SDK version for the practical, rational developer.
https://twitter.com/maxSdkVersion - The maximum SDK version for the irrational, terrible Android developer.

Samples architektury Android aplikacii https://github.com/googlesamples/android-architecture
Zaujimavy talk - https://realm.io/news/kau-donn-felker-minimum-viable-development-android/