1--- 2title: Learn more 3--- 4 5Now that the doing is done, let's fill in the gaps on the concepts that we applied. 6 7## JavaScript features such as async/await, import, and others 8 9Read about [Modern JavaScript on React Native Express](https://www.reactnative.express/javascript/features). 10 11## React 12 13We used React components and APIs. Having a solid understanding of React is essential to using Expo to build your app. We recommend reading the [Main Concepts section](https://reactjs.org/docs/hello-world.html) and the [Hooks section](https://reactjs.org/docs/hooks-intro.html) of the React documentation. 14 15## React Native 16 17While developing the tutorial app, we used React Native extensively. You can start from the [React Native basics guide](https://reactnative.dev/docs/flexbox) to learn more. Also, check out the following docs: 18 19- [View API reference](https://reactnative.dev/docs/view) 20- [Text API reference](https://reactnative.dev/docs/text) 21- [Platform specific code](https://reactnative.dev/docs/platform-specific-code) 22- [Presenting data in a list](https://reactnative.dev/docs/using-a-listview) 23 24We used Flexbox to layout our components. Check out the following recommendations to learn more about it: 25 26- [Height & Width](https://reactnative.dev/docs/height-and-width) 27- [Layout with Flexbox](https://reactnative.dev/docs/flexbox) 28 29## Configuring your app with app.json 30 31You can learn more about customizing your [app icon](/guides/app-icons) and [splash screen](/guides/splash-screens) in our guides. Also, look through the [**app.json** Expo config reference](/workflow/configuration) for properties you can configure in this file. 32 33## Building your project into an app 34 35Once we've built a project we're ready to share with users, we can build it into an app. Read more about [distributing your app to stores](/distribution/introduction) and [deploying websites](/distribution/publishing-websites). 36 37### Navigation 38 39We had one screen in the tutorial app. Most apps have multiple screens. Read more on how to add navigation to your app by following the [Fundamentals guide](https://reactnavigation.org/docs/getting-started) in the React Navigation documentation. 40 41### Debugging 42 43Sometimes things go wrong, and when they do, you'll need to use debugging tools to find and fix errors. [Read more about debugging](/workflow/debugging). 44 45### Gestures and Animations 46 47To learn more about implementing different types of gestures and animations, we recommend the following: 48 49- [React Native Gesture Handler](https://docs.swmansion.com/react-native-gesture-handler/docs/) documentation 50- [React Native Reanimated](https://docs.swmansion.com/react-native-reanimated/docs) documentation 51 52## Join the community 53 54Join our community on [Discord](https://chat.expo.dev/) to chat with other Expo users or to ask questions. 55