Generally, a typical workflow to set up direct light sources is as follows:
See Plan light sources.
You can create various types of light sources for your scene and set attributes (options) that further define their characteristics.
You can adjust the qualities of the lights you’ve added by changing the settings in the Attribute Editor and the Channel Box.
See also Show, hide, or resize a light manipulator.
By default, lights do not cast shadows in Maya LT. You can specify which lights cast shadows and choose which method Maya LT uses to generate them: raytracing or depth maps.