You can look up maintenance information and schedules on the Nissan Owners site.
Nissan Owners Site
From that page, you can also download a copy of the latest Maintenance Guide in PDF form. It is the one provided with a new car purchase.
Periodic Maintenance Schedules
Schedule 1 calls for more frequent fluid changes and inspections. It is for cars driven in severe conditions or for those who want to take extra special care of their Z. Schedule 2 calls for less frequent maintenance.