Change the Info on my user account?

1. I want to change my user name but can't figure out how to do it. Can someone help?

2. I want to drop the people following me. Can someone help by telling me how?

3. I also want to delete pictures on my history but don't know how.

Can anyone help me with any of these issues? Thanks for the assistance.

@saren

Hi, my mobile is acting screwy and I accidentally posted multiple topics. Can you please delete this one? Thanks.