How to start react native? Is there any road map for that?

Answer 1

Have you learnt React Native?

Go at here to check how to start.

https://facebook.github.io/react-native/

React Native and node.js both are different so remove tag node.js

Answer 2

https://www.sololearn.com/post/144238/?ref=app
https://code.sololearn.com/WKKkpq0efxai/?ref=app