Are there any good PDM administration learning resources or books available?  I've taken the PDM user and PDM administration courses offered by the VARs, and still feel that I need more information in order to work on fixing my company's PDM installation.  The one recent book on Amazon has a well-earned 1-star review (I wrote it after buying and reading the book), so I already know that it is garbage.

Any suggestions would be greatly appreciated.

Thank You,

Matthew Sosa