Step on the Gazelle, but don't start working out yet. Press the "Mode" button to power on the computer. The display will start blinking.
Press the "Mode" button again to cycle through the options you want to use during your workout. By default, the computer will display distance. Press the button again to view calories burned, and again to view time. Press the mode button a third time to view heart rate.
Start exercising. The display will change as you work out. If you are using the heart rate function, make sure to grab the silver handlebars while you are working out. These handlebars have a sensor in them that will detect your heart rate.
Press and hold the "Mode" button when you are done exercising to turn off the computer.