Arduino Uno, Arduino Motor Shield, and H-Bridge used to control 24v DC Motor

I am a newbie. I heard that Arduino is an open source environment. I have a Uno rev 3 and Motor Shield. I want to run a DC motor of 24 volts and 14 amp in both directions. I am very lost on thought on how to make this work with the motor shield or without, or even with another microcontroller. I have also tried creating an h-bridge on a breadboard and working off that. DC Motor Details:

Model: MY1025
Voltage: 24 V
Current: 14A

Any tips or ideas? References would be good as well. Thank you

I think I might have posted this in the wrong forum. Sorry