Hey Terry! Great to see you here! I'm looking forward to hanging out in Nashville together. So far, the community here has been pretty amazing.

Putting the images up can be a bit confusing, but basically you just use an image hosting site and past a link to the image or use Markdown syntax. Takes a little getting used to, but once you get it, you're good. Since it's only storing text in the blockchain, the images have to exist elsewhere. As to your profile image, it was probably brought in when you registered via Facebook. The avatar images next to comments aren't configurable yet.