If you are planning to invest on a popcorn machine then take a look at the four basic types of popcorn machines.•    Air popcorn: These do not use oil for cooking popcorn. They use trapped heat to cook the popcorn kernels and are therefore healthier than microwave version. •    Oil popcorn: Traditionally this is how popcorn was made. The machine uses oil to cook the kernels which is tastier but less healthier.•    Microwave popcorn: well this is one easy way to pop popcorn; using the microwave. You require special popcorn machine supplies for this; the microwave popcorn kernel. While this does seem to be popular, many people who love organic foods do not use mocrowave ovens.•    Stove popcorn: this is an inexpensive method of making popcorn with kettles or pot and pan placed on the top of stove. No oil, just heat will suffice to cook the kernels.