Also, I don't see where to change my avatar or signature. 

Forum Menu Bar:  Click My Profile

Posted by: @olsarge

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Also, I don't see where to change my avatar or signature. 

Just below the ad for The Filling Station. The button that says My Profile with a down arrow. Hover over it then click Account. Another way is click the down arrow below your name on the left of your text box then click the gear icon.

Ok, as you can see, I managed to replace my full name with my username and edit my avatar. Maybe it's just me or my phone but I don't see where anyone mentioned turning the phone horizontal.  When I did, it displayed all the icons, pencil, trashcan that it didn't display vertically.  Thanks to all.

Most web sites are not prioritized for phones. Most are set up to work best with computers or tablets. When someone asks a question I default to computer how-to unless it's mentioned up front that it's on a phone. If phone is mentioned I step back and let someone else advise. I never use my phone for web business other than Facebook so I would be no help.

Well, I give up. I changed my username to Olsarge. Now in the roster it shows my username not my name.

Posted by: @olsarge

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Well, I give up. I changed my username to Olsarge. Now in the roster it shows my username not my name.

Working on it.