Water: Water your Christmas cactus regularly, but make sure not to overwater it. Check the soil moisture before you water, and only water if the soil is dry to the touch. You should also avoid letting the water collect in the plant's central cavity, as this can lead to rot.
Light: Place your Christmas cactus in a bright spot, but not in direct sunlight. Aim for 4-6 hours of indirect light each day. Too much direct sunlight can cause the leaves to become dry and scorched.