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:
Making Music with the FreeSoC2
Create a synth keyboard with the FreeSoC2 from SparkFun.
Spectacle Light and Sound Kit Hookup Guide
All the information you need to use the Spectacle Light and Sound Kit in one place.
Getting Started with MicroPython and the SparkFun Inventor's Kit for micro:bit
Learn MicroPython with the micro:bit.
Audio Codec Breakout - WM8960 Hookup Guide
The SparkFun Audio Codec Breakout - WM8960 is a low power, high quality stereo codec chock full of features. In this tutorial, some of these features by using an Arduino microcontroller to configure the audio codec and pass audio to the headphone or speaker channels.
Or check out this blog post for inspiration: