React Native Tutorial for Beginners
Programming with Mosh
A free video tutorial from Programming with Mosh that introduces React Native by building a simple mobile app, covering environment setup with Expo, core components, styling and Flexbox layout, so viewers can start writing cross-platform iOS and Android apps.
More resources on Cross-Platform Development
Kotlin Multiplatform Docs
JetBrains' official documentation for Kotlin Multiplatform, covering project setup, sharing business logic across Android, iOS, desktop and web, expect/actual declarations, and Compose Multiplatform for shared UI, with step-by-step tutorials for building a first cross-platform app.
Flutter Official Documentation
Google's official Flutter documentation, including installation guides, codelabs, widget catalog, state management and layout tutorials, and API reference, so learners can build, test and deploy a single Dart codebase to Android, iOS, web and desktop.
Flutter Crash Course for Beginners - Build a Flutter App with Google's Flutter & Dart
A free Academind crash course by Maximilian Schwarzmüller that introduces Flutter and Dart by building a small app step by step, covering widgets, layouts, state and user input, so beginners can create their first iOS and Android app.
Flutter & Dart - The Complete Guide
Maximilian Schwarzmüller's long-form Udemy course on Flutter and Dart, progressing from Dart fundamentals through widgets, navigation, state management, forms, HTTP requests, Firebase and device features, so learners can build and publish complete iOS and Android apps.
flutter.dev
Flutter.dev is the official home of the Flutter framework, offering comprehensive documentation, installation guides, and tutorials for building cross‑platform mobile, web, and desktop apps. It provides API references, a widgets catalog, sample apps, and hands-on codelabs to help you learn Flutter from getting started to advanced topics.