As the webpage guy I can only answer your second part. 🙂
On the front page, or the forum, where you can see the login module to the right, please click on your name, after “Welcome,”
On this page, on the top right part there is a tiny “EDIT >>” text, click on that one.
On the next page there is a line with “User Account Profile Information Avatar Image Forum Settings” , click on Avatar Image.
It’s my bad that it’s so complicated, still working on a new user and community module.