To run examples from this book, you will need a computer running Windows, Linux, or macOS. You will also need IntelliJ IDEA (the Ultimate edition version is preferable), and Android Studio. You will need a basic knowledge of GitHub and Git to clone a project with examples.
Since Kotlin is an official language of Android development, Android Studio supports this language out of the box. For IntelliJ IDEA, you need to install a plugin that is available for download from https://plugins.jetbrains.com/plugin/6954-kotlin.