MOTM

There is an exhaustively long 88page .pdf file on
Emu's website detailing how each module works
along with patch diagrams and graphs.  I've only
been interested in analog synths for about two
years now and this helped me out a lot when I was
still learning.

http://www.emu.com/products/pdf/PDF_manuals/other/
Modular/modularop.zip

-Bob