Electret Mic Breakout Board Hookup Guide
Contributors:
LightningHawk
LightningHawk 
Resources and Going Further
A quick Google search for "Electret Mic Breakout" will get you going for any type of project you may want to create. Here are a few of my favorites from Instructables.
If you need to add sound to your next project but need something a little more sensitive, robust or a little more useful, I recommend the SparkFun Sound Detector.
Documents
For more audio fun, check out these other great SparkFun tutorials:
Si4703 FM Radio Receiver Hookup Guide
Add some tunes to your project with the Si4703 FM Radio Receiver Breakout.
Noisy Cricket Stereo Amplifier - 1.5W Hookup Guide
A hookup guide for the Noisy Cricket Stereo Amplifier - 1.5W.
SparkFun Inventor's Kit Experiment Guide - v4.1
The SparkFun Inventor's Kit (SIK) Experiment Guide contains all of the information needed to build all five projects, encompassing 16 circuits, in the latest version of the kit, v4.1.
Or check out this blog post for inspiration: