Answers for "how to start a react native project"

how to run react native app

react-native run-android 
react-native run-ios

start react native app

npm install -g expo-cli

how to start a new react native project

npx create-react-native-app NAME

create a react native project

$ npm i -g create-react-native-app
$ create-react-native-app my-project
$ cd my-project
$ npm start

how to create a new react native project

$ npx react-native init firstapp

start react native

react-native start