Several people have asked about editing their profiles, so here is a post to cover the topic.
Specifically, people ask how to edit their noted in the About Me section.
1) Go to the top right of the page and hover or click the arrow by your avatar and username.
2) Scroll down to the 5th heading and click on Settings.
3) Click on the 2nd heading, Portfolio.
4) Edit and make your changes.
5) When done, click on Save Portfolio Details in the blue box at the bottom of the page.
You can change other settings in this section in the same way.