Linux question (for Dell Mini) - moving folders commands

[JEBB]

Let me try again. The expanded folder is on the desktop where I'd rather not have it. I'd like to move it elsewhere, a good candidate is /usr. When I try to click and drag it to /usr Linux tells me that I don't have permission to do that. So I'd like to know how to get around that barrier. I assumed I could only get around that barrier via the terminal.