Finger print scanner help

I'm trying to use a finger print scanner to activate a 12 volt output. I've seen many tutorials on other projects with many different parts. I have no idea where to start and what to use. It doesn't have to be 12 volts I can convert if needed. It just needs to be a DC output when the finger print is applied. Any info would be great, thanks.

I'm looking at the Fingerprint Scanner - TTL (GT-511C3) and the Arduino Uno. would this be all I need to make this work?

If you don't need more than 20 fingerprints I would use the cheaper model: Fingerprint Scanner - 5V TTL (GT-511C1R)

The Arduino Leonardo might be a better choice. Then you can use Serial1 for the fingerprint reader while still having USB Serial for debug I/O.

You can get a 5V and up to 30mA DC output from the Arduino without additional equipment.

Thanks for the reply. I purchased an Uno starter kit which came today. Looks like I've got a lot of reading to do.