In this videos I take you through the best practices when downloading DCPs. This includes a screen-cast demonstrating the process.
See the small presentation here
https://docs.google.com/presentation/d/19wKJUQn8I7EmHZ0Dbq2dT6i3DXjOLMqGyoFtguINjSc/pub?start=false&loop=false&delayms=3000