Create Static Blog Using Github and Jekyll

According to GitHub Pages the name of the new repository should use the username.github.io format.

sudo apt install ruby gem git
sudo gem install jekyll
jekyll new sitename
bundle exec jekyll serve

You should now be able to access the blog locally at localhost:4000

To publish:

git init
git add .
git commit -m "Initial commit"
git remote add origin https://github.com/username/username.github.io
git push origin master