Курс по разработке под Android на Kotlin.
Курс основан на Udacity-курсе "Developing Android Apps with Kotlin" от Google: https://classroom.udacity.com/courses/ud9012.
Документация на Kotlin: https://kotlinlang.ru/docs/reference/basic-syntax.html.
IntelliJ IDEA: https://www.jetbrains.com/idea/.
Android Studio: https://developer.android.com/studio.
Documentation for Android developers: https://developer.android.com/docs.