That sounds heavy, but it's pretty simple considering the food you eat contains either one, two, or all three of the main macro groups. Let's pretend you eat a flawlessly healthy diet. That apple you have as a daily snack has 1g of protein, 30g of carbohydrates, and 0g of fat -- it's a good source of carbs, but not anything else. The 6oz skinless chicken breast you enjoy every night for dinner, on the other hand, has 6g of fat, 52g of protein, and 0g of carbohydrates, so it's a huge source of protein, but not so much fat or carbs.
Packaged foods with nutrition labels make life a little easier, if not necessarily healthier; all the info is right there. But for the fresh, whole foods you eat all the time, you'll have to do a little research via a search engine or guidebook. If that sounds tedious, you must not be aware of how much you use the internet to look up pointless facts like celebrity birthdays and what time the Super Bowl is.
So how do I track them?
You... track them. Warning: there is some basic arithmetic involved. Counting macros is based on a caloric breakdown: 1g of protein has four calories, 1g of carbohydrates also has four calories, and 1g of fat has nine calories. So that apple has 120 calories from carbohydrates, and four from protein. This breakdown may not exactly add up to the total caloric value of the food, especially if you're rounding up to the nearest half-gram (as you should), so don't let that trip you up each time you analyze a nutrition label. You only need to worry about calories from protein, fat, and carbs.