And I agree with Esther, lighting does not follow the logical convention in posing as characters do.  Point lights are the worst offenders, pinpointing them, to begin with, is very tedious and confusing.  I usually use a top camera to locate them, and then use combinations of different cameras to move them into their final positions.  Infinite lights only show a circle with light arrow directions, and can only be manipulated with the light controls illustrated in the previous post.