RE: What are the advantages of Learning HTML (HyperText Markup Language)
There are many programming languages like CSS, JavaScript, PHP, Jquery, C++ and many more.
I died here. CSS is a style sheet language. HTML is a markup language. Neither of them is a "programming" language.
Programming languages can be used to create programs to control the behavior of a machine or to express algorithms.
https://en.wikipedia.org/wiki/Programming_language
HTML and CSS are static. They cannot define the behavior.
jQuery is a JavaScript library, not a language per se.
Although, I agree with @jackgallenhall that it's wise to start with HTML, I believe it's crucial to learn both CSS and JavaScript in order to create decently looking and behaving web pages.
Learning CSS frameworks, like Twitter Bootstrap, is a must if you don't want your pages look like they are from '90s. JavaScript advanced libraries, like React.js, Knockout.js, Backbone.js, and frameworks, like AngularJS, are nice to know too. But you need to know the JavaScript language first in order to use them.
Thanks for the kindest reply @Sanbir because I was about to put the same words about PROGRAMMING! I was also about to correct my words. Thanks any way.