In order to run Jekyll locally, follow these instructions for a full installation of Ruby, RubyGems, and Jekyll: https://jekyllrb.com/docs/installation/
You may use a tool like https://www.sourcetreeapp.com/ or https://desktop.github.com/ to clone the git repository and manage git commit / pull requests. You may also use the Terminal:
git clone https://github.com/ma6/ma6.github.io.git
Once you have everything installed, go to the root folder of the git repository and run in your Terminal:
bundle exec jekyll serve
The website is now available at the URL mentioned in the Terminal, e.g. http://127.0.0.1:4000/
The website is available at https://martin-gude.com/