In order to eat according to the keto diet you need to know what is good keto foods and what is not keto food. This can sometimes be hard and it requires some reading to find out what food you can eat and what you should avoid. The easiest way to learn what is the proper keto foods is by starting out with a good guide on what kind of food that is considered to be keto foods. The guide over at dietketo.com explains this in a very good way.
The basic rule for beeing considered to be keto foods is that the food should contain a very low amount of carbohydrates. In your daily intake of food you should only eat around 20g of carbohydrates which is very little. This is so that the body will change its energy source from using carbohydrates to instead use fat as the main energy source.
Some sources of food that are good when eating keto diet foods is to ensure the food has a high amount of fat and a low amount of carbohydrates. Food groups like seafood and meat from animals contain basically a very low amount of carbohydrates. However both seafood and meat does not contain so much fat (instead they are rich on protein). You therefor need to add additional fat to your meals when eating seafood and meat to get a high total fat percentage.
Other types of food that are good for a keto diet is vegetables that grow above the ground and mushrooms. They are also not very high on fat but they do not contain many carbohydrates. Eggs are something that are good for both getting fat and protein and they do not contain any carbohydrates. Many people consider eggs to be the perfect keto foods and eat plenty of them. I am one of the people who use eggs as something I almost eat on a daily basis.