When installing an outdoor FM antenna, it is important to use well-shielded coaxial cable for the connections leading into the house. It is also important to install grounding and static drains at the point where the cable enters the house to help prevent lightning strikes from causing a fire.
If the antenna is directional, installing a rotator helps move the antenna around to pick up different stations. However, this is not necessary if most of the desired stations come from the same direction.
A non-directional antenna provides better reception, but it is not as effective at removing competing radio signals. To make the antenna less noticeable from the street, try spray painting it to match its surroundings before installing it.