How to read color coded resistors

My father was an electrical engineer.  This is the kind of stuff he knew.  I remember once learning this, but it was probably 20 years ago, so I’ve forgotten how.  Guess I should use the information to bone up on my knowledge I don’t actually use for anything. (via MAKE blog)

Resistors are coded with colored bands in its shell, usually four colors but sometimes you can find five. Each color represent numbers which you can decode to get the exact value. The first three colors are the resistance values and the fourth color represents the tolerance.

[tags]MAKE, resistors, DIY electronics[/tags]