Welcome to the forum. I noticed your post and was waiting for someone more informed than me to answer, but here goes. I click on community and then on the create content icon. Then I go to the blog. That will kind of lead you through adding comments and photos. I am never sure if I am doing it right, but it seems to work. Lin

Look in the help/faq section. There are several screencasts showing the ArtMetal interface for creating blog posts, uploading images, adding calendar events, and creating a poll.