Learn to build a cross-platform mobile app for iOS and Android using React Native in this comprehensive tutorial for beginners. Explore fundamental concepts like Views, Text, Images, Touchables, and Buttons while mastering essential layout techniques using Flexbox. Dive into debugging methods, platform-specific code, and publishing your app. Practice your skills by creating a Welcome Screen and View Image Screen, and learn how to refactor your code for better maintainability. By the end of this tutorial, you'll have the knowledge to develop your own React Native applications with confidence.