Changing the camera

Usually the camera follows my character around whenever he turns, but I must have accidentally pressed a button or something, because now it's stuck on free cam. It doesn't look like there's anything in options that controls this. I just want to change the camera back.

You're saying that your camera literally does not turn when you turn your character? Or is it in first person mode or something? The only thing I can think of is that your scroll wheel "button" is stuck down and not letting it turn.

You can set a custom key binding to the zoom out button in the controls section of "options". Not sure if that will fix your problem, but perhaps with some fiddling and some tinkering you'll solve it.

By free cam you mean the same effect as holding the right mouse button?