First, locate your in-ground meter box. This should be somewhere near the curb or sidewalk in your yard. The meter box should have a rectangular metal lid on it, which you will want to remove to view the meter face.
The meter face could be a series of dials like an electric meter, wheels like a car odometer, or a digital face like a calculator. The digital meters have a light sensor, so if you do not immediately see a display, try shining a flashlight on the meter face to bring up the display.