Avatar selection
The avatar is the image of a user. It can be a photo as well as an abstract icon. Other users will recognize you fast if you have an own avatar. Under Edit profile » Avatar you can choose your own personal image.
Here you can select an avatar from the list, if it was set by the administrator. The other possibility is that you upload your own avatar. Please note to check the size and file size of the avatar. There are normally limits set. Your avatar will be displayed in your profile, next to messages and other places on that page.