Cannot change view or select objects in the viewport

[MelodyJane]

I'm in the Perspective view, and none of the navigation controls are working. It's like the view is locked. I see a yellow circle with a green + in the middle of it, if that's a clue. I also can't select any objects, except in the Object list. Thank you for your help!

[MelodyJane]

Never mind... the camera was on, that's all it was.