If you haven't already, go to Setting up Raspberry Pi - Tools and Services and follow the instructions there. You will need the tools for this tutorial.
Eventually you will want a usb drive to mount to a certain location when Raspbian boots. There are better ways to do this, especially if you are supporting a large environment of Linux boxes. However, if you are setting this up for use at home this method will be good enough.
lsblk
sudo vim /etc/fstab
:set number
UUID= - - -- /External ntfs-3g defaults, noatime 0 0
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