Good Reference Links

• Resistor Color Code - Cool graphical interface
• American Wire Gauge (AWG) - Thickness of wires gauges
• Fourier Series Applet - Interactive Fourier series with audio
• The Electronics Club Great resource of project, types of components, and basic skills
• Electronics Club Parts Information - Nice source of information on parts
• Express PCB - Free Schematic Drawing Program for Windows
• Op Amps for Everyone - good book from TI
• Web EE - Electronics Design Website
• Mechanical reproduction of digitized speech on a piano - Fourier demonstration in the extreme.