The first step is the mouth this occurs before you take a bite of your food. The smell of food triggers the saliva witch causes your mouth to water once you taste the food saliva increases.
The Second step is called the Pharynx and Esophagus also called the throat. The Pharynx is what receives the food from your mouth. Branching off the Pharynx is the Esophagus, carries food to the stomach and windpipe, which carries air to your lungs.
The 3rd step is the stomach and small intestine. The stomach is like a organ with strong muscular walls so it could hold food. The stomachs powerful enzymes continue the process of breaking the food down and changing it to a consisting of liquid or paste.