Assuming you are referring to a ceiling fan, they are relatively easy to install. You will need a few tools including a ladder, drill, screwdriver and wire cutters. Most ceiling fans come with a mounting bracket, which needs to be attached to the ceiling joist using screws. Once the bracket is in place, you can hang the fan motor on the bracket and secure it using the provided screws.
The next step is to connect the fan wires to the house wiring. You will need to connect the black wire to the black wire (hot wire), the white wire to the white wire (neutral wire) and the green wire to the green wire (ground wire). Once all the wires are connected, you can turn on the power and test the fan.