The Logbook window shows QSOs in your log with one QSO per row. You can select the fields that will be displayed and how the QSOs should be sorted.

Above an example of a more or less standard logbook display.

A completely different looking display! This format is used to see what QSL labels will be printed and in what order. It is easy to create a new display format for a logbook; see below. A double-click on a QSO will display that QSO in the QSO Window so you can make changes or just look at more details.

The report editor at work. The left column shows the available fields, and the right column shows the fields in the report. This is the report displayed above.