Don't level the dish. Make the mounting post plumb and level. From there you will use the numbers provided by your receiver (or online options) when you enter your zip code. You will have to set azimuth using a compass and rotating the face of the antenna toward the Southern sky. The setting for elevation will be found on the side of the antenna mount and are not perfectly accurate but they will get you very close. If the dish uses more than one LNB there will also be skew settings usually indicated as -90 to 0 to +90 but some mounts vary. You will set this number first along with the elevation before beginning the side to side azimuth search.