Learning how to make delicious ice cold coffee is really easy! You do need to allow plenty of time for preparation, as a good brew has to be able to gather good flavor. A lot of times people try to make iced coffee and end up with a drink that is either too bitter or too sweet.
I suggest the following cold-brew method for creating a sort of iced coffee concentrate. Since I tried it, I have made it this way ever since, and can tell you that there is no better (or simpler) method for having the most delicious iced coffee at your fingertips.
Find this recipe with pictorial here: http://thepioneerwoman.com/cooking/2011/06/perfect-iced-coffee/