USB Mounting and opkg command

Dear All,
I am new in beagleboard. I want to copy data from USB to any folder to install the ALFA WIFI driver. but i am unable to see usb device. please help me step by step.
2nd i am use to apt-get, i am unable to find nano command through opkg. how i can read write and update files through opkg
please help. thanks.

Any chance you can let those who may want to help, which board you have?