Posted: 27/10/2015 at 19:56
Never mind Librarian it is so frustrating when you try to do something but because the question isn't clear you end up wasting your time being a good person. Fortunately for society we know that you are too good a person to just ignore the next person who asks for help: no matter how easily their question can be confused.
As for profile pictures as with all things on this site you will struggle using a mobile phone / tablet (it isn't at all mobile friendly: but the designers I am sure are working on this).
1. Use an appropriate computer (there isn't away around this)
2. Go to your profile page (top right of the website)
3. Click "MY SETTINGS"
4. Click on your current profile picture. It'll pop up saying edit. At this point any person moderately competent at using a computer should be able to complete the task in hand
5. Remember that a thank you doesn't go a miss.