ENTRY LEVEL https://www.tutorialspoint.com/android/ https://www.javatpoint.com/android-tutorial http://techblogon.com/android-development-tutorial-for-beginners/ I NTERMEDIATE: http://abhiandroid.com/ https://github.com/hussien89aa/AndroidTutorialForBeginners https://phraseapp.com/blog/posts/21-best-blogs-android-developers/ http://tutorialsbuzz.com/ http://www.viralandroid.com/search/label/AndroidStudio https://www.androidhive.info/ JAVA: http://codevscolor.com/ ANDROID IDE : https://developer.android.com/studio/index.html