HTML stands for Hyper Text Markup Language.
HTML is the markup language used for creating Web pages. HTML describes the structure of a Web page (to browsers) in terms of elements. HTML elements are the building blocks of a Web page and they're represented by HTML Tags.
You can start writing HTML right away with any text editor (TextEdit, Notepad). All you need to do is save the file with a .html
file extension and you can test anything you've written by opening up the file (in the browser).