Let's see ... first things first:

Welcome to Pet Talk!

Congratulations on becoming a first-time dog-mom!

Welcome, and welcome, what kind is Susie? If it shows up as a link, that's okay, that's what attachments do. To embed an image, it needs to be already on the web somewhere, then you type [img ] -then the URL-then [ /img] but with no spaces in any of it, and it'll just show up in your post!