When you say “I’ll be able to upload any photo and place it anywhere on the page, right?”
Are you referring to the content areas, or the background of a certain section.
You can do whatever you want inside the theme’s files and code, but the options panel does allow you to change the backgrounds, colors, fonts, etc.
The best thing for you to do is to install Parallel Lite or Integral Lite and try it out.
As for the link I sent you, yes that is to create a menu item which will bring you down to the corresponding section on the same page. Like you see in the demo.