Some distributions of Linux provide a number of additional installation procedures, allowing you to configure various software packages such as TCP/IP networking, the X Window System, and so on. If you are provided with these configuration options during installation, you may wish to read ahead in this book for more information on how to configure this software. Otherwise, you should put off these installation procedures until you have a complete understanding of how to configure the software.
It's up to you; if all else fails, just go with the flow and see what happens. It's very doubtful that anything that you do incorrectly now cannot be undone in the future. (Knock on wood.)