[sdiy] More Questions...

[Jesse Yoder]

OK, I just have more questions.  Thanks for all the help given so far.
 This is the most ambitious electronics project I've attempted and it
helps to be able to ask questions.  I am really excited about it
though as I have never gotten a chance to play around with an analogue
synth before.

So, 1st question is if there is a book which might explain simply the
concepts and connections, etc. of analogue synths, e.g. answer
questions similar to those I pose today.

In reference to this schematic:
(http://www.musicfromouterspace.com/analogsynth/keybrdcontroller.html)
there are (2) gate out jacks, (2) trigger out jacks, and (4) CV out
jacks.  This may be a silly question, but why exactly do I need so
many?  Do I need more than one out to connect to these ins on a
module?  Is it just to give me more sonic options? (plugging into
multiple modules at once?)  Just curious about that.  In this
schematic for a VCO:
(http://www.musicfromouterspace.com/analogsynth/August2003VCO.html) we
have (3) inputs for 1V/Oct CV, (1) input for linear CV in, and (1)
osc. sync input, as well as outputs for square, saw, triangle, and
sine wave oscillations.  Just wondering about the specifics of how
everything fits together.

Thanks!
~~Ponyboy