Sometimes your website visitors do not have a full understanding of how to use your website. They will usually want to get help and more information about the same. The FAQ module becomes a better way to give support to such people. This module replaces the need for direct customer support emails and calls for little issues. The FAQ module is a simpler way to answer your customers the questions they could have. Instead of having to write whole page articles to explain a given section, the module helps you to construct the most important questions that may arise from your customers and answer them.
The easiest way to make this module more useful is to assume that you are new to your website - look at it as a visitor. Try to do things around and note what is not put out clearly. You can also have your friends try to use your website and whenever they do not get something clear, they should write down the questions they could ask. Use these questions and provide answers and your FAQ is fully set.