I am new. I was working thru the tutorials when I discovered that all of my work on the exercises disappeared. So, as I was searching for a resolution, discovered the forums. I tried to register and it said it already had my email address. I don't recall every registering before. After "retrieving" my "lost password", to my horror I find my email address displayed as my username. And worse, no way to change it???? 1. How do I change my display name. (It is NOT listed for me as an option under Settings) 2. How do I retrieve the work I did on my exercises. (my cookies have not been deleted on my computer since I began them) Thanks to anyone who can assist me with this.