Also like most people, I quickly realized that I do not own an 8 quart container, and that I didn't have room in my refrigerator for 8 quarts of cold coffee.
Here's the amounts I used:
1 1/3 cups ground coffee
8 cups water
Most pitchers hold 8 cups, so you will need two - one to steep the coffee, and one to strain the coffee. I used a double layer of cheesecloth to strain.
And yes, it is that good. So easy and so worth it.
Some tips: I mix the coffee with four cups of water first, then add four more cups of water. I mix up the coffee before bedtime, then it is ready for me in the morning. After I pour out all the cold brewed coffee, I scoop all the grounds out, then add a bit of fresh water to the pitcher and slowly pour the rest of the grounds out over the strained grounds. I can usually get another cup of coffee by rinsing the pitcher and letting it slowly strain through the grounds. This last coffee is a little bit weaker, but still so good. Seriously good iced coffee.
When you are shopping, buy some more cheesecloth. Some ground coffee, Extra creamer. Try out the cold brewed method.