For our Sentra, i just bring it to a gas station or to Fuji auto supply for change the change oil and tune-up work. I just buy my needed parts from Fuji/G&S auto supply in Kamias or pag OEM, sa Youngbros in Banawe or Nissan Commonwealth.
To find out what needs to be done during a particular service interval, you can refer to the maintainance table of the Owner's Manual.