How can I keep spaghetti from sticking together while cooking?

To prevent spaghetti from sticking together while cooking, make sure to use a large pot with plenty of water and add salt to the water before boiling. Stir the spaghetti occasionally while cooking and add a little bit of oil to the water to help prevent sticking. After cooking, rinse the spaghetti with cold water to stop the cooking process and further prevent sticking.