What's Next?

What's Next

You now know the core of Kotlin. Here are the natural next steps:

• Android Development — Kotlin is the language of modern Android. Explore Jetpack Compose for building declarative UIs.
• Coroutines — Kotlin's approach to asynchronous programming. Learn suspend functions, Flow, and structured concurrency.
• Spring Boot with Kotlin — build REST APIs and backend services using Spring Boot's Kotlin support.
• Arrow — a functional programming library for Kotlin, bringing monads, lenses, and algebraic data types.
• Kotlin Multiplatform — share business logic between Android, iOS, and web from a single Kotlin codebase.

Resources

• Kotlin Official Documentation — the official language reference and tutorials.
• Kotlin Koans — interactive exercises directly in the browser, organized by topic.
• Kotlin by Example — short, annotated examples for each language feature.
• Android Developers Kotlin Guide — Kotlin for Android, with Jetpack and Compose.
• Kotlin in Action by Dmitry Jemerov & Svetlana Isakova — the definitive book on Kotlin, written by JetBrains engineers.