Water when the top half of the soil is dry, and never let the soil dry completely. Be sure you have a pot with drainage holes so excess water can escape, to avoid root rot.
It loves an occasional mist / nearby humidifier, a breath of fresh air every now and again, and some plant food every 2-3 months or so (excluding winter months).
How much light DO I need?
Am I pet friendly?
According to the ASPCA, the Majesty Palm is non-toxic to cats and dogs.