2: Hover over and click your avatar box next to the “What’s new, name?” You will notice the box collapse a little when you hover over it. (If you click on someone else avatar it will go to their profile.)
3: The profile page will look like this. Next click on the “Profile” link under activity.
4: Choose the “Change Profile Photo” and/or ‘Change Cover Image” links to change these photos. Note a cover image prefers a max width and height (525x225px). You can also take a photo if you have a webcam hooked up.
This is the easiest and fastest way to change/add these images to your profile. Gravatars are great if you like using the same avatar on several forums.
You can also visit My Profile link to change a bit more about your profile.