MIDI Shield - MIDI Code Reading

Hello, everybody!
I am building a project and I need a little help with some coding.
I have a KORG padKONTROL midi controller that I plan on using but I don't know how to read the code coming into the arduino shield. My shield is a sparkfun MIDI shield and I don't exactly know how I can read the incoming MIDI Code from the controller.
I have tried the code that is supplied by the sparkfun site but I don't exactly know what it is suppose to do. I need to know if my shield is reading the incoming MIDI.... Please Help!