Press the fork button:
Copy the SSH clone url (you'll need to click the SSH link before copying):
In your terminal/command line, run:
git clone URL # Where `URL` is the link you just copied
cd git-workshop-playground
Make a new branch:
git checkout -b add-my-page
Create your own html file:
subl people/USERNAME.html
You can see some examples already in the people directory
Now stage your changes in the working directory, and commit:
git add people/USERNAME.html
git commit -m "Add personal page"
Push to a new branch on your repository:
git push -u origin add-my-page
Now make a new pull request to the main repository. There should be a handy link on bjz/git-workshop-playground: