React Tutorial: An Overview and Walkthrough:

https://www.taniarascia.com/getting-started-with-react

JSX:
https://www.taniarascia.com/getting-started-with-react/#jsx-javascript–xml

Create a New React App:
https://reactjs.org/docs/create-a-new-react-app.html

Rendering Elements:
https://reactjs.org/docs/rendering-elements.html

Components:
https://reactjs.org/docs/components-and-props.html

Start With A Mock:
https://reactjs.org/docs/thinking-in-react.html#start-with-a-mock

Step 1: Break The UI Into A Component Hierarchy
https://reactjs.org/docs/thinking-in-react.html#step-1-break-the-ui-into-a-component-hierarchy

React Props:
https://www.w3schools.com/react/react_props.asp

Rendering a Component:

https://reactjs.org/docs/components-and-props.html#rendering-a-component

The constructor() method:

https://reactjs.org/docs/react-component.html#constructor

If you don’t initialize state and you don’t bind methods, you don’t need to implement a constructor for your React component.

Avoid copying props into state! This is a common mistake.

You Probably Don’t Need Derived State:
https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html

React Event, Binds:

https://www.w3schools.com/react/react_events.asp

Passing Arguments to Event Handlers:

https://reactjs.org/docs/handling-events.html#passing-arguments-to-event-handlers

Event binding: https://www.debuggr.io/react-setstate-is-not-a-function/

Building Your First React App: https://codeburst.io/building-your-first-react-app-c1f6eb814205

Calculator app: https://medium.com/@nitinpatel_20236/how-to-build-a-simple-calculator-application-with-react-js-bc10a4568bbd

Body Mass Index Calculator: https://www.proglogic.com/code/javascript/calculator/bmi.php

~~~~~~~~~~
Publish, Build:

Creating a Production Build: https://create-react-app.dev/docs/production-build/

Deployment: https://create-react-app.dev/docs/deployment/

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

ReactJs + WordPress: https://snipcart.com/blog/reactjs-wordpress-rest-api-example

Free Bird WP oldalon

Use WordPress with React to Create Headless CMS for Your Web Application:

https://www.cloudways.com/blog/use-react-with-wordpress-to-create-headless-cms/

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Simple examples:

https://vegibit.com/a-simple-react-js-form-example/

https://reactjs.org/community/examples.html

https://react.rocks/tag/Beginner

Guitar chords: https://reactjsexample.com/simple-react-component-for-guitar-chord-charts-with-audio/

Kódbázis: https://www.youtube.com/channel/UCRNRqohbalZqwuQCb_zawcg

https://www.youtube.com/watch?v=aR_5csRGF24&list=PL4YRXnsNcCQqJ0g5zNyf1g2MmP_NocqEW

React vs Angular: An In-depth Comparison: https://www.sitepoint.com/react-vs-angular/