Q.Care of oriental fan plant indoors
I bring my fan plants in each year. How should I care for them (watering how often, how much, feed)? They sit in front of French doors facing west). Every year some of the fans turn brown. Should I rotate the plants to expose them to more light, and should I spray them? Would grow light work?

Here is an article that discusses how to take care of an indoor fan palm:
https://www.gardeningknowhow.com/houseplants/fan-palm/growing-fan-palm-indoors.htm
And, yes, your plant would benefit from a rotation to give the entire plant equal time to the most intense light. And, so long as your plant gets at least four hours of direct sunlight daily, I do not think a grow light would be necessary.
Happy gardening!