This sound sensor modules comes with two outputs Analog and Digital so you can use one or both the outputs at a time according to your project.
You can buy this amazing dual output sound sensor module at amazing price form ebay by clicking here
As this module uses LM393 as the main IC, you can download the Datasheet of the IC from here
Pin diagram of this module is shown in the fig below.
GETTING STARTED VIDEOS
There is no such particular video for getting started with this sensor as you just need to upload digitalRead example for interfacing this sensor as digital sensor and to upload analogRead example for interfacing this sensor as analog Sensor.
Still I’m attaching one video clip that shows how to use this sensor as a digital sensor.
PROJECTS USING THIS
1) Clap switch using sound sensor and Arduino
2) Music reactive lights using Arduino nano and sound sensor