HTML is the standard markup language used to create web pages and it was made by the World Wide Web Consortium (W3C).
For HTML, You will simply need a basic text editor, such as Notepad and an Internet browser, such as Internet Explorer or Chrome. And also you can use a dedicated software program such as Dreamweaver or Microsoft FrontPage.
The extension of the HTML file is either .html or .htm.
It is the most widely used language to create web pages.
It is mainly used to mark and describe each of the content (writing, links, pictures, sound and video), so the web browser can show them correctly.
It is the building blocks of all websites.
And finally, HTML is very simple and easy to learn.