Nexus Server documentation has now joined the Nexus documentation uploaded a few days ago.Once again, documentation is available in PDF format or as a windows help file (CHM file).
If you download the CHM file, copy in to the same folder that Nexus Server is running from (usually c:\program files\p squaredexus v1) and the help system should be available from the help menu in Nexus Server.
Both files can be downloaded from the Nexus Support page (see Support menu above).