The Reporter Settings page is where you configure shared report settings not available on the Reporter ribbon. This includes things like the Report Definition; the report scope; data binding; etc.
List Item Reports
These reports renders list data in manner similar to standard SharePoint views - configure List Item Reports
Resource Usage Reports
These reports allow you to report on the amount of work required and/or assigned, spread evenly across the period of time allowed for the work to be completed - configure Resource Usage Reports