You don't need many instructions for the software because it's simple enough to work with it as it is in the current form. The application allows you to keep track of your health stats. However, to work normally you will need a bracelet that is attached to your arm while you're exercising and doing effort.
Certain features like pedometer can be used with the GPS and location turned on, but for maximum efficiency, a bracelet (WiFi or Bluetooth) is necessary.