In order to get vistors or visit others you first need to buy an house.Next you need to visit isabelle at the town hall.She will give you your tpc then you have to go to the photo booth to take a picture for your tpc.Once that is done you can go to the station and show him your tpc and he'll ask you do you want to invite people in or visit someone else.Thats how you get visitors or visit someone.