What do you mean exaclty?
I think you mean save player position, and status.
In this case you should create a file where you simply store all the data you may need.
I did 2 type of save in my game normally, 1 where i store the option (graphics, sound etc.) and second type is game type save.
How do this depend in your game.
As for example in a race game if you save during the race, you'll need to save all the car position, rotation, speed, eventually damage, fuel, weather, consumed tyre etc..
In an rpg you probably should save quest (best use boolean).
Etc.
If you could tell me wich game you are creating i could try to help you more in deep.