Just plug your USB flash drive into the USB port of your computer or other USB equipped device. The flash drive has an LED light that will flash to indicate it's operational.
Your computer may recognize a new drive has been detected, and prompt you to open the drive (or run files already on the drive). Choose the option to 'open' or 'explore' the new drive.
If you are running Microsoft Windows as an operating system, you can also see the new drive by clicking 'My Computer' on the 'Start' menu which lists all your computer's drives, including the flash drive. Double click the flash drive to open it.
You can unplug your flash drive at any time, as long as files are not being read from or written to the flash drive. Ensure the LED is not flashing.