Grouping in Maya is often underestimated. Here is a basic tutorial about the power of groups: https://youtu.be/3kzjGy1IyY0
In this tutorial I focus on the rotation of lights and cameras. The turntable camera is in fact not a rotating camera, but a rotating group (with the camera inside). If you want to rotate a light in your scene in a perfect circle, the group is your straight forward solution.