I'm in a broadcasting class at school, and was in it last year. All the equipment we bought is here now, so I need to start organizing things so people besides me understand how it works. Most of the studio is my idea(s), and it's not a hard concept to wrap your head around if you diagram it on paper, it's just a lot for someone to grasp using only words. I know there's mind mapping software like xMind and bubbl.us, but is there anything really excellent for diagramming something like this?
Visio is probably you best bet.