Create GitHub Pages Site

Create New Repository

On GitHub, create new Repository.

For this new Repository, select following options:
Repository template: No template
Owner: YourUserName
Repository name: your-cool-site
Visibility: Public
(Public option is required for your GitHub Pages Site to work)
Select: Add README file
(This is needed because Git requires to have at least one file with content to create new Branches. And new Branches will be needed to view your new website)
.gitignore template: None
Choose a license: MIT
(You can switch it as you like)

Now you have a new GitHub Repository with a single README file.

Next, let's convert that Repository into a GitHub Pages Website.

Create New Branch

New branch is needed because we will want Docusaurus compiler to run on main branch and place output into this new gh-pages branch. And later GitHub Pages compiler will run on gh-pages branch and output into actual site.

On GitHub, create new Branch called:
gh-pages

Now you have a Repository with 2 Branches, main and gh-pages.

Next, let's create GitHub Pages that will generate a website based on contents of README file in Branch gh-pages.

Create GitHub Pages

In GitHub, navigate to:
Settings > Pages
Source: Deploy from a Branch
Branch: gh-pages
Branch Location: / (root)
Custom domain: leave empty for now
Select: Enforce HTTPS
(All modern browsers require Https protocol, not Http)

In GitHub, there is no Apply Settings button, settings should be active as soon as they are changed.

Now, let's confirm your GitHub Pages settings correctness.

Navigate to Actions. It should now have a new Workflow called pages-build-deployment. That Workflow was created by GitHub Pages settings.

Upon successful Run of that Workflow, you should now be able to see your website at:
https://yourusername.github.io/your-cool-site

Note that website is grabbing contents of existing README.md file in gh-pages Branch!

Now that you have GitHub Pages site running, let's add Docusaurus framework into the mix!