In this tutorial, we learn how to use a USB flash drive. First, go to "my computer" through your desktop. Next, you will see a device that says "flash drive", which is in drive "d". When you unplug your USB device, the drive will disappear. When you plug it back in, a new window will appear asking what you want to do with drive "d". Now, go to your documents folder and if you want to copy one of these files, right click and choose the copy option. After this, you will be able to paste your files into your USB flash drive if you need to save them onto this device.