An easy way to get used to it is to leave it in a position where you won't have to move it at all. An example being, if you're bot lane, center the camera in the middle of the creep wave. That way, it's not directly centered on you, but will allow you to see your character and the entire vision cone around your character and minions. You'll have to get good at manually moving your mouse to the edge of the screen to look around the map, clicking your minimap to focus your camera there, or using the F1, F2, etc keys to focus on your teammates more quickly.
You can also hold the space bar to keep the camera on your champion when you're fighting or kiting. Learn when and how to use each. It helps.