The document discusses different types of reports that can be generated in Koha using report wizards and guided reports. It provides tips on building new guided reports by selecting modules, columns, criteria, and ordering results. It also describes how to use saved reports and the anatomy of an SQL statement. Key elements covered include report wizards for circulation, catalog, and patron information, how to build new guided reports in the patrons, catalog, or accounts module, and how to edit the WHERE clause of saved reports.