How do I know what spark plugs to buy?

I know that the plugs and wires need to be replaced, like ASAP (car wont start if it's been sittin too long, like all day). But I don't know how to tell which ones to buy. If I go into a store like Canadian Tire will they know which ones I need just by telling them the year and make of my car? (1996 Pontiac Sunfire)How do I know what spark plugs to buy?IDK, but you are just TOO cute!How do I know what spark plugs to buy?they know..How do I know what spark plugs to buy?If you give them your make, model, and year at the store, they will be able to match them up for you. Also, if you look in your manual, it will tell you. You can take them out and bring them to the store with you to make sure you get the right one. I recommend Autolite. Make sure that you check the gap (in maunal) with a spark plug gap tool. You can get those at the store too, I got one that can goes on my keychain.How do I know what spark plugs to buy?Crissy's got a good idea but in your area the direct AC Delco platinum or iridium plugs are good also. NGK 's are my personal favorite because they offer four grades. Regular V gap, Platinum, Platinum / iridium and 100% iridium. Price either AC Delco or NAPA ignition wires. Both do a great job. Good luck on your project. Don't forget the distributor cap and rotor.How do I know what spark plugs to buy?yeap they have this fancy machine called a computer it know everything about cars. a 1996 sunfire you could change them yourself . they are right on the top of the motor.How do I know what spark plugs to buy?yea,if they sell car parts,they should know,probably they will give you ACs.thats a gm plug.