Instructions
Click and hold the right button on your mouse. While holding the button down, move the mouse to change the angle. This works with Free Visual Point, the default camera mode. Once you have the angle you want, release the button.
Tap the "F9" key once to switch to a close, fixed angle with the camera directly behind the character. This allows you to use the arrow keys to move the camera angle around instead of using the mouse.
Tap the "F9" key again to get a fixed height camera. This positions the camera at a high angle facing down on your character. You can use the mouse to move the camera to the left and right.