QuadStick user's YouTube channels:
(some of these are NSFW)
QuadStick user's Twitch channels:
Videos from QuadStick users.
The latest from Steamy Biscuit (Jeremy) explaining how to create a new custom voice command file:
The QuadStick is one of the products featured in the video below. If you don't understand German, pause the video, turn on German Subtitles, then turn on Auto-Translate
Craig Lawrie - Playing Dishonored with the QuadStick