1. Download the arduino IDE
http://arduino.cc/en/Main/Software
2. Download the USB chip driver
http://www.wch-ic.com/download/list.asp?id=126
3. Plug in the NANO development board and the driver will be
installed automatically.
4. Select the board in the die NANO
5. Select the COM port, this can be queried in my computer, just
the port inside your uno development board
6. It is best to choose the routine program that comes with arduino
and burn it into it.