Click on your name at the top right corner of the page. This opens a little box of choices, and one of them is avatar. Click that and then you can choose a picture from your photos and upload it. If this doesn’t work, post the picture that you want for your avatar, and @Ken Anderson can put it in the avatar for you.
Yes I got that far but don't have pictures in my PC and gave all of them to my brother anyway. I thought you might have a library of avatars with pics of animals or anything that would suffice. At another forum, I chose a cartoon image of a moose.