Sure. You don't have an avatar or a profile, so...
>To put on avatars
Save a picture from somewhere. Avatarmagic.com and iconator.com are good avatar websites. Save an avatar you like. Click your name, then see where it says avatar options. Click it. Click browse. Click the avatar you want to put on. There it is!
>To put on a profile
Go to the top where it says settings. Click edit profile. Then, just edit it.