It does not require training to understand your voice. DigitalSky will slew to any Messier, NGC, IC or ADS object when you simply say the name of the database and the number. If the object is below the horizon, DigitalSky will let you know. DigitalSky will slew to the names of common objects. DigitalSky will tell you the object that you are looking at, the type of object and the magnitude.
Additional information is provided for double stars and planets.
DigitalSky will tell you the time. A voice recognition practice feature is provided in the menu. Before your first observing session, you can practice the verbal commands with your computer at home. Flexibility was an important goal in development of the software. You can use the screen display with or without the voice output and voice recognition.