Welcome to the Forum, all you will ever want tyo know about your Z and how to fix it when it needs some attention can be found on here. Great bunch of experts always available worldwide.
Tip
Update your user details with your location and Model and year of your car, it assists when you ask questions and if your lucky there may be a member near to you who can assist if you need a hand.
Probably a good idea to bolster your toolkit with a decent Diagnostic Scanner going to save you money in the long run when something crops up. Creator 310+ is a popular scanner available on ebay and Amazon circa £50. You will also need a 20pin to 16pin cable changer to plug the scanner into the engine bay 20pin diagnostic socket so it will read all modules. The 16pin OBD2 socketn under the steering wheel will only reqad the Engine and Transmisson modules. Airbag modules are read from the 20pin round socket.
20pin tyo 16pin cable available on ebay for little money.