Sobre publicar una pagina web con GitHub.io:

https://deanattali.com/blog/multiple-github-pages-domains/#step4

https://docs.github.com/en/pages/getting-started-with-github-pages/about-github-pages

https://code.likeagirl.io/how-to-move-from-codepen-to-github-44a65511048e

https://stackoverflow.com/questions/15563685/can-i-create-more-than-one-repository-for-github-pages