Markdown is What?
Markdown is a way to make your website look good. Make your title bold or if want to emphasize a point, you can use italics to draw people’s attention. If you had a list of stuff that goes on and on, there is a way to be able make an actual list. It is a good way to make a site and will standout for your resume for a company to see what you can make and even have your social media links added to it and pictures if you had portfoilio, which makes it easier to show them online instead of bringing a book or giant portfolio case you have to carry around. So basically you can control/build your own website. This be really great to learn if you own a business, or want to combine all your resume or portfolio and even social media links to it. Very easy to share your Website link to anyone or have it in hand right away to show someone.
Examples of Markdown

What is Github?
It’s a website that you can go into to make your very own creative website. You will be able to create your very own domain name of your website that people are able to see and click on the link to go to your website. There will be a lot of help on on their site or in chat if you are stuck or need help or some cheat codes to help you out. Don’t be afraid to try it out. Just be creative and make it the way you want or think it will draw attention from other people looking at it.
Refer to here for more information: Github