Links.

I'm going to level with you. I put this list of links together a couple years ago. I'm pretty sure you could do better. But hey, it's a place to start.

Basic Stamp:

Parallax (manufacturer)

Basic Stamp Accessories

Acroname - Sonar and other sensors

Shopping (Surplus):

All Electronics
Electronic Goldmine
American Science and Surplus

Shopping (New):

Jameco
Mouser
McMaster-Carr

Electronics info (General links):

http://www.epanorama.net/links/basics.html
http://www.du.edu/~etuttle/electron/elecindx.htm
http://www.iserv.net/~alexx/lib/tutorial.htm
http://www.ethanwiner.com/HWTutor.html
how stuff works

Breadboard:

http://www-ece.rice.edu/~jdw/unilab/breadboard.html

Edison was a bad man:

http://www.roadsideamerica.com/pet/topsy.html

Fruits and Vegetables:

Glowing Pickle

High Voltage:

Power lines

LEDs:

White LEDs

Multimeter:

 

Radiation:

The Radioactive Boy Scout

Resistors:

http://www.ealnet.com/m-eal/resistor/resistor.htm

Semiconductors:

http://www.howstuffworks.com/diode.htm

Schematic Symbols :

http://encyclobeamia.solarbotics.net/articles/symbols.html

Solar power :

Solarbotics
Solar cooking

Soldering:

Desoldering+bad soldering picture gallery

Sound:

Circuit bending