Hi Ihsan Ul Haq!
I suggest you to learn not just by reading the docs, but also working in a real project to get a better understanding.
I have this beginner-friendly open source project on Github called Winterly Tab. It is a chrome extension built using ReactJS & TailwindCSS.
You can fork it and run it in your local computer to learn more on how to develop a product using ReactJS. Plus, you can also contribute to it and win a T-shirt and other swags during this 🎃 Hacktoberfest 🎃 event.
Github repository here https://github.com/dkhd/winterly-tab