How to change the bulb in the rear turn signal on a chevrolet cobalt coupe?

well i don't know about cars but i know that my right side rear turn signal is not blinking and there's a faster click to it in the car when i do try to use it. how do u change the bulb? or what needs to be done to fix the problem?How to change the bulb in the rear turn signal on a chevrolet cobalt coupe?
get an idea where the offending light bulb is on the back of the car. Open the trunk lid and twist out the bulb. It will have a wire attached to it. Pull the bulb out of the socket, you make have to twist it slightly, take it to the store and buy another and put it in, presto, chango, drive.