Today, I got my new road bike (Trek 2100 double with Ultegra rear derailler and Ultegra pedals). Since I hope to enjoy this gift to myself for many years to come, I want to develop good cycling habits. Some cyclists have told me not to pedal when shifting gears and others said to pedal with light pressure when I shift. Which way do you feel is the best way to shift gears?

Thanks,

Tom