A low carb diet is one where you limit the amount of carbohydrates and eat more proteins instead. The easiest way to reduce carbohydrates is with the the “No White Diet' where you stop eating food with sugars, white flour (pasta, bread, cake, donuts, etc), white rice, and potatoes, where most carbs are hidden.
A low carb diet is one that involves eating meat, cheese, and eggs. You need to avoid potatoes, rice, and pasta. You can have fat in the form of butter, oil, and mayo. Limit your carbs to 10 grams per day.