WHAT IS THE GITHUB PAGES AND HOW TO USE IT

GitHub Pages is a static site hosting service that takes HTML, CSS, and JavaScript files straight from a repository on GitHub, optionally runs the files through a build process, and publishes a website.
learn more abot github pages .
What is Markdown or MD?
is a way to style text on the web. You control the display of the document; formatting words as bold or italic, adding images, and creating lists are just a few of the things we can do with Markdown. Mostly, Markdown is just regular text with a few non-alphabetic characters thrown in .
Basic writing and formatting syntax using MD
Headings To create a heading, add one to six # symbols before your heading text. The number of # you use will determine the size of the heading.
# The largest heading
## The second largest heading
###### The smallest heading
The largest heading
The second largest heading
The smallest heading
Rendered H1, H2, and H6 headings
Emphasis
This text will be italic
_This will also be italic_
This text will be bold
__This will also be bold__
You can combine them
To know more about using markdown and how to use it you can read this artical and this artical