Synthesizer books

There are loads of great resources, available on the web.

Introductory

 * Sound On Sound magazine Synth Secrets article series.
 * Sound On Sound magazine Synth School article series.
 * The Clavia Nord Lead manual (relates to all synths though).
 * The Serge Gold book.
 * The ARP 2600 manual.
 * Sam Ecoff's free tutorials.
 * The Buchla Music Easel manual.

More in depth

 * Electronic Music: Systems, Techniques, Controls by Allen Strange ISBN 0390684635 - "by far the best text I have ever come across dealing with modular synthesis" (Available as a .pdf to purchase from the publishers)
 * The Synthesizer by Roland a boxed set of four books.
 * Synthesis.pdf Digisound's Modular Synthesis manual.
 * Rob Hhordijk's website.
 * ARP 2600 manual
 * Electronic Music Circuits (1982) by Barry Klein
 * The Complete Guide to Synthesizers by Devarahi
 * Advanced Programming for Modular Synths; edited by James J. Clark;
 * Nord Modular Book
 * Synthesis.pdf Guide To Synthesis from Digisound
 * Fundamentals of Music Technology; Basic Music Technology I; Basic Music Technology II; Sam Ecoff ;
 * Welsh's Synthesizer Cookbook: Synthesizer Programming, Sound Analysis, and Universal Patch Book; by Fred Welsh.
 * Nord Modular G2
 * Analog Electronic Music Techniques in Tape, Electronic and Voltage-Controlled Synthesizer Studios; Joel Naumann and James D. Wagoner; 1985; ISBN: 0028731409.
 * Electronic Music - Systems, Techniques, and Controls, sec ed; Allen Strange; 1983; ISBN: 0697036022
 * Power Tools for Synthesizer Programming; Jim Aikin; 2004; ISBN: 0879307730.
 * The Art of Electronic Music; Tom Darter (Compiler), Greg Armbruster (Editor); 1983/1985; ISBN: 978-0688031060.
 * The Technique of Electronic Music by Thomas Wells