Assuming you want to know how many cups of coffee to make:
The first thing you need to do is figure out how many people will be drinking coffee. If you're making coffee for yourself, then you only need to make one cup. But if you're making coffee for a group of people, then you'll need to make more. Once you know how many people will be drinking coffee, multiply that number by the amount of cups each person wants. So if four people are drinking coffee and each person wants two cups, then you would need to make eight cups of coffee.
The next thing you need to do is figure out how much coffee grounds you'll need for the number of cups you're making. A general rule of thumb is that one tablespoon of ground coffee per six ounces of water makes a good cup of coffee. So if you're making eight cups of coffee, that would mean using sixteen tablespoons (or two full coffees) worth of grounds.
Once you have your grounds measured out, add them to your filter and put it in your coffeemaker. Then add the appropriate amount of water - again, this is typically six ounces per cup - and turn on your coffeemaker. In a few minutes, voila! You'll have fresh brewed Coffee ready to drink.