Use a Stairmaster
Step onto the Stairmaster. Be sure to use the handrails while you get into position. Move to the top step to help prevent the Stairmaster from beginning to move prior to the start of your exercise.
Program the Stairmaster according to your current exercise requirements. For instance, when you're just starting out, you will want the Stairmaster moving at a slower pace so you can warm up.
Set the functions you want to appear during your exercise. If you are looking to burn a certain number of calories before you stop, then you can set it to show the calorie expenditure. If you want to see how many flights of steps you would have climbed, then you can set that to display instead.
Set the resistance for the steps as you use the Stairmaster. The resistance of the steps determines how much of your body weight you are going to be raising with each step. In other words, if you use lower resistance, then the stairs will move down to accommodate a faster step up while helping you to keep moving.
Press "Start" to begin to use the Stairmaster. Be sure you are holding on to the handrails as it begins so that you don't fall off. The Stairmaster will gradually increase in speed until it hits your target speed.
Adjust the settings on the Stairmaster manually, changing the speed or resistance at will during your exercise. This will switch it into manual mode and may end up resetting some of your current exercise statistics, but this will also give you greater control of the program as you go.
Press the emergency stop button whenever you need to quit in a hurry. It will slow and then stop the Stairmaster in a second, and allow you to get off the machine without injuring yourself.