Hmmm this might be tricky then. There are plenty of online galleries but they won't use YOUR domain name, they will use theirs.

If you know Zero HTML you will need help to set up your own domain name and gallery. In my opinion the easiest thing might be a blog. Wordpress.org offers free blogs that are AMAZING. There are hosting companies that make the wordpress installation simple. I do believe one of those companies is dreamhost.com...that might be the easiest for you to do alone.

Hope that helped...feel free to ask more and if I can help I will.
Marko