You can get our interfacing library for Arduino from the Arduino library manager.

Open up the Arduino library manager:

Search for the Adafruit Graphic VFD library and install it

Search for the Adafruit GFX library and install it

If using an older version of the Arduino IDE (pre-1.8.10), also locate and install the Adafruit_BusIO library (newer versions do this automatically when using the Arduino Library Manager).

We also have a great tutorial on Arduino library installation at:
http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use

You should now see a new example folder called Adafruit_GP9002 and inside, an example called GraphicVFDtest. Open up that sketch and upload it to your Arduino. You should see the example test sequence displaying!