In this video, you will learn how to make a light setup in Blender that will track the desired object with a single click. This method simplifies the creation of three-point lighting.
I also demonstrated various types of light setups in which you can tweak individual lights as well as all of the lights in the scene with a single setting.
There's also a way you can do this without constraints for all except point lights: when you click on the lamp, there's a yellow circle that appears. You can click and drag this to point it at any object in the scene. But if you hold down Ctrl while draggin, it will rotate the light automatically to face the normal of where you're pointing.