Assistance with reporting

 I am on a self-teaching project at the moment and I am hoping that someone can assist by pointing me in the right direction.  I am writing a program to go against eBusiness Suite 11i data.  The requirements are to select a group of invoices based on a date range, write specific information about these invoices to either the view output or view log files then update the records that were selected.  I have a pl/sql program that will handle the update but I am lost as to how I can output the records before update to produce a listing of