Indoor ferns are great for those shadier spots indoors where you may have trouble keeping other houseplants happy. Ferns are one of the most ancient types of plants and have evolved over eons to grow under the dense canopies of trees on forest floors in a range of climates cross the world. So a corner of a room away from windows or a north facing room or a bathroom with frosted glass suits them down to the ground.
The main two things indoor ferns like is a relatively humid atmosphere and to be kept evenly moist, not allowed to become too wet or too dry. They do not like being grown close to radiators or underfloor heating but then most plants don't. If the tips of the fronds go brown you know the air is too dry so either mist daily with a water spray or move to a kitchen or bathroom where it should be a little more humid.