We described how to work with Engine in the documentation which you can find in ANPR SDK installation folder.
Usually the placement of the documentation is here "C:\ANPR Engine SDK\ANPR_SDK\doc\AnprSDK.html".
Shortcut to the documentation placed on desktop and in windows applications menu.

Examples can be found here - "C:\ANPR Engine SDK\ANPR_SDK\examples"
and here - "C:\ANPR Engine SDK\ANPR_SDK\ANPR_VS\examples".