Customizing Blog background and images

Whoohooo, I think I finally have this figured out after many attempts, and editing each and every page every time I posted something to the blog. I KNEW there had to be an easier way to do all this! (Not to mention, while it was easy enough to edit four to six pages, for now, in the future, there will not just be four to six pages to edit...) This is a case, where it is handy to be fluent and literate enough in html, css, and php coding. (See, Steven? I HAVE paid attention to all your squablings...)

If you click on Dashboard, and then on Template, you can go into the code and edit the code, thus customizing your template to match the looks of your site.