If you have never used Git and/or GitHub, the other possibilities I listed are surely easier to use.
That being said learning a version control system (Git is the most used one) and learning how code hosters work (GitHub is the biggest) is an important part of becoming a developer. GitHub has some great introduction courses:
https://lab.github.com/
If you’re interested I recommend having a look at their First Day on GitHub and First Week on GitHub learning paths.
To answer your question: You would synchronize your local code with your GitHub repo and activate “GitHub Pages” to see the code live in action. See for example this post of another learner: Assessment wanted for 'Structuring planet data' task
Have a nice day,
Michael