What is HTML? and it used for what? (HTML OVERVIEW)

What is HTML ? and it used for what?

HTML = Hypertext Markup Language, it used to create a web pages strucutre

Hypertext refers to the manner in which HTML documents (web pages) are linked together. 

As its name suggests, HTML is a Markup Language (not programming language) which means you use HTML to simply "mark-up" a text document with tags that tell a Web browser how to structure it to display.

HTML can be relied to other languages file, like CSS file , JavaScript file.. 

In the beginning, HTML was created on 1992 to defining the structure of documents like headings, paragraphs, lists.. to facilitate the sharing of scientific information between researchers and students.

Actually, HTML is being widely used to format web pages with the help of different tags available in HTML language.

From where you start learning?

1- https://www.w3schools.com/html/default.asp

            w3Schools is an educational website for learning programming languages and web technologies online

2- https://developer.mozilla.org/fr/docs/Web/HTML

             MDN Web Docs, previously Mozilla Developer Network and formerly Mozilla Developer Center,               is the official Mozilla website for development documentation of web standards

Is HTML sufficient to create a complete web page?

Probably no, the web page created only with HTML are not sufficient, cause without CSS (cascading stylesheet) the web page is sterlie.
CSS decorate the web page and give it a soul so that the user can deal with it normaly and without confuse