Can you do it yourself?
Start by reading www.irrigationtutorials.com
That, along with some help around here, you can probably figure out things like number of zones and types of equipment. The only thing I find tricky is if you try to push the limits or have trickly layouts where it's difficult to determine head placement to avoid watering undesired areas.
You can probably find enough help here to figure out things like numbe
How complex is the layout of the area, or are we just talking