Setup your default configuration items.
Open-AudIT Default Configuration Values and Description
Make sure (if you wish to use Discovery), that you have set your values for default_* items.
Audit a single Windows computer.
How to audit a single Windows computer
Discover a subnet.
How to use Open-AudIT Enterprise Discovery on a Subnet
Discover your Active Directory domain.
How to use Open-AudIT Discovery on an Active Directory Domain