You can follow people on GitHub to receive notifications about their activity and discover projects in their communities.
When you follow people, you'll see their public activity in the activity view of your news feed. If someone you follow stars a public repository, GitHub may recommend the repository to you in the discovery view of your news feed. To follow someone, visit their profile page and click Follow under their profile image.
To stop following someone, visit their profile page and click Unfollow under their profile image.