Exactly where does schema.org markup go?

I know that I need to be using this to help SEO, and I have the markup written (via a generator that was suggested on google forum, and via a contributor on google), but cannot seem to find exactly where to go to put this code in?

I am fairly certain this is a newbie question, but having done a good bit of research from Yoast, google, and a number of other online places, I just cannot seem to find a specific answer as to where I go in WP to add this stuff! Is it someplace in the Editor under Appearance? Do I go someplace in my File Manager and insert it manually on the server? Does it go in the Custom CSS box? The Custom Script </head> box?

Please help this newbie figure out this seemingly simple task!
Thanks!
Jon