Tom Nook is one of the first friendly faces you meet on your island. He’s also a wealth of knowledge! You can visit him any time, day or night, in Resident Services. You can ask him about paying off your home loan for the chance to upgrade and customize with more rooms, more styles, and more colors. Once the Resident Services tent has been upgraded to a building, you can talk to Isabelle about changing the town tune and town flag. She can also suggest ways to improve your island’s star rating, like pulling weeds and planting flowers.