If you look in the upper right corner of the page, you see your user name, the link to "Your Profile" and logout. Click on the link to Your Profile and that's where you can edit everything. At the bottom of the screen is a yellowish save button. If it sees issues, it will point them out in red. Then you have to make your changes again and try saving again.

Most of the visual changes have occurred in the last week or two.

Thanks, Chrisb. I had been trying that, but it kept rejecting my changes and switching back to what I had before. The issue was to enter a valid address. Since there is no place for an address, I finally realized it wanted my name. Once that was in, it worked.
kat