I have a simple question. Let's say you figure out your calories ( I found mine and subtracted 500 so i can go into calorie deficit to start cutting ). I found how much protein fat carbs i need bla bla. My question is what're the steps to track these? For example, i want to eat like a bowl of oat meal, do i get like a food scale and use some type of app to find exactly how much carbs protein fat it has?