Alex converted Doogie's excellent tutorial to Wiki format.
https://wiki.mobileread.com/wiki/SunriseXP_tutorial
Also available in the Wiki is the Reference that was originally bundled as help documentation with the application itself. (Removed in beta 9e.)
https://wiki.mobileread.com/wiki/SunriseXP_reference
The reference needs some work, but at least the information is there.