Hello! Here is a great read on how to get started with hooking up your mini breakout board: http://blog.microcasts.tv/2014/10/16/edison-mini-breakout-the-real-getti...
and what is the best platform to program Intel Edison if I used WINDOWS .....
Once you have downloaded them check out MRAA (https://github.com/intel-iot-devkit/mraa) and UPM (https://github.com/intel-iot-devkit/upm) Github repos to see how to communicate with the GPIO pins and examples for PWM.
Hope this helps!