Intro to react:
https://www.w3schools.com/react/default.asp

React homepage link
https://reactjs.org


TodoList sample:
https://www.makeuseof.com/react-to-do-list-app-build-simple/

using forms:
https://www.techomoro.com/submit-a-form-data-to-rest-api-in-a-react-app/

react php sample: 
https://shitalmainali.com.np/submitting-html-form-data-to-mysql-using-react-and-php

axios vs fetch:
https://blog.logrocket.com/axios-vs-fetch-best-http-requests/#basic-syntax