Stovetop popcorn is made by adding one fourth of a cup of oil and two thirds of a cup of popcorn kernels into a deep pot. Turn the burner on medium high, put a lid on the pot, and shake the pot over the heat until the kernels have popped.
You can also buy popcorn in a bag and microwave it according to the directions.
Just like with any type of food, everyone has his or her own special way to make popcorn. Allrecipes.com offers many popcorn recipes, including ones for simple movie-style popcorn, caramel popcorn, popcorn balls, and many others.