Water. Norfolks like to be kept lightly moist at all times. Make sure the pot allows for good drainage. Letting the soil dry out even just a little is a bad idea - the plant will shed its needles and they won't grow back! Make sure to water when the top 1/2" feels dry to the touch.
Light. Give Norfolk a bright location, but avoid full sun. A West or East location should do nicely! Avoid long exposure to extreme cold, heat, or wind.