Let's try to put it in english. Thanks to that technology we can allow you to read this comment and if you like it click in the vote icon and when you click then change the amount shown as reward for my comment and also change the icon to let you know that you already voted in this comment. I sometimes think about it as the same way I have to write in english for you to understand I also have to write (programs) in another language for the computer to understand (In this case like someone said before the browser) and the name of the language we are talking about here is ReactJS. There are many other because is easier to talk to the computer (In this case the browser) depending on what you want to do.

I the other hand don't wish to be a ReactJS developer and go to Dtube, Utopian-io (Let's start from there resources we already have here), Google and so on. Try to do the minimum and the moment you don't understand a word like we do when we try to learn a new language, go and search in the dictionary (In this case Internet) what that means and when you learn it then keep going. Nothing is easy at the beginning but you can do it.