Xconq's help information is organized into a list of topics. When you first open the help window, you will see the list, and a row of buttons. To look at a specific topic, just click on it.
The "Topics" button goes straight to the list of topics, while the "help" button shows you the topic describing the help system itself. "Prev" and "Next" buttons take you through the topics in order, while "Back" goes to the last topic you looked at.