ELECTRICITY & ELECTRONICS:
TUTORIALS, HOW TO...
hyperphysics (wonderful link to Physics!)
educypedia (great!!)
http://www.free-definition.com/
http://en.wikipedia.org/wiki/Main_Page
Lorin Parker's class at Calarts_2006: http://music.calarts.edu/~lorinp/electron1/basicelectronics.html
Cornell U.: http://instruct1.cit.cornell.edu/courses/ee476/
Tom Igoe's site: http://tigoe.net/pcomp/index.shtml
A list of references from Ken Rinaldo (schematics, history....) http://www.ylem.org/artists/krinaldo/links/technical.html
Tech links: http://www.me.ua.edu/ME360/weblinks.htm
Good info on motors @ http://www.oddparts.com/acsi/motortut.htm
More on motors: http://www.trainweb.org/girr/tips/tips5/motor_tips.html
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SCHEMATICS
http://www.discovercircuits.com/
Schematic (all kinds !) ***: http://www.satsleuth.com/schematics.htm
More schematics: http://www.4qdtec.com/#indx
More: http://www.uoguelph.ca/~antoon/circ/circuits.htm
And more... http://www.mitedu.freeserve.co.uk/schematics.htm
..... http://www.solorb.com/elect/
Adam Overton's EKG schematics: http://www.calarts.edu/~aoverton/Resources/EEG_EKG/
Analog Synth: A resource site for building, repairing, modifying, and learning about analog music synthesizers http://synthtech.com/