How do I get a picture with my name when i post?

[jfy4]

When i post, i see that some people have picture with their names. i want to have my own picture with my comments. how do i do it?

thanks

 

[jtbell]

You contribute money to PF and become a Gold Member. Or you contribute enough knowledge that you get recognized as a Homework Helper, Science Advisor or Mentor. Then you get an option to add an avatar via your profile page.

 

[jfy4]

thank you.

 

[lisab]

There's https://www.physicsforums.com/showthread.php?t=338366". Help spread the word about PF, and get a gold membership for a year.