When you want to learn Kotlin, here are some resources that can help.

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KotlinKotin Home

SDKMAN

for installing various versions of Kotlin in Linux or Cygwin bash shells.

Online Kotlin consolefor experimenting with Kotlin code

Kotlin TutorialsLearn Kotlin by doing step-by-step tutorials

Getting Started with Android Studio

Kotlin is fully supported in Android Studio 3.0