Terminology

I realize that people some times have trouble with all the terminology in Drupal

Drupal

An open-source content management system that is used on this site and is taking over the world., but you really need to try; it is essential to asking a question that can be answered.

Modules provide code to make Drupal

Drupal

An open-source content management system that is used on this site and is taking over the world. do things; they do not "show up" anywhere (other than a list of their names that you've already found). A moduleAn add-on, or extension, to Drupal to provide additional functionality; written in PHP. typically produces some kind of dynamic content that does display. Many modules produce this content in "blocks" - those boxes that are placed in one of the non-main content areas (left/right "sidebars", "header", or "footer").

Many modules also produce output in the main content area; you cannot move that. You can, however, add other modules that change the way it is formatted, such as the panels moduleAn add-on, or extension, to Drupal to provide additional functionality; written in PHP. that allows the main content area to be divided into smaller pieces ("panels").

Almost all modules come with either a README.txt or INSTALL.txt (or both) that give you more information on how to configure them. If they don't you can also check the handbook section for core or contributed modules.