Food is one of the most important thing in the game. It is key to survival and will help you in the long-run. There are many types of food and may different ways to get it. One way could be farming. With farming you can get a veritity of food like wheat, potatos, carrots, beatroot, melons, and pumkins. These can sometimes be used to make other food like bread and cake. Another food sorce can be meat from animals like cows, sheep, pig, chicken, and fish. When cooked meat can give you more food point rather than eating it raw. There are some foods that are poisonis and that you should not eat! Some may inclued rotten potatos and pufferfish.
For begining your world it would be best to farm crops rather than eat all the animals around you in spawn. When you have enough resorces then you are able to make some type of barn to hold animals like cows or chicken. It would be better if you got all the animals to then have one gigantic farm to hold all animals.
Another way to get food like golden carrots is to have a villiger trading system. It takes a lot to make a system like that but determanation and patience will help a great deal!
