HTML

Hypertext Markup Language is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets and scripting languages such as JavaScript.

required softwares:

any one textediter :- 
            notepad
            notepad++
            sublime text editer
            etc.....

any one browser:
            google chrome
            internet explorer
            etc....

Simple HTML first program:

useful tags and attributes:

                                                                              

useful websites for learning html

https://www.w3schools.com/html/
https://www.codecademy.com/learn/learn-html
https://html.com/
https://www.javatpoint.com/html-tutorial