Throwing a quad is no easy trick, but with I'll try to throw you some pointers. First, you need the proper equipment. Tighten those fks to 18 so that your skis don't fly off during the rapid rotation. At least three layered tall tees are a must: they will increase your surface area to keep you in the air longer. Finally be sure to have the newest tom wallisch full tilts so there's no shin bang on the big landing.
From here it's pretty much commitment. I recommend throwing your first quad cork off of a cannon rail to a flat, icy landing. Your inrun needs to be able to achieve at least 60 mph as you straight line into the cannon. It is best to lean as far backseat as possible as you approach the rail and enter a 50 50 slide position in order for your tails to load and hold lots of pop. Once you reach the end of the rail, do a spread eagle and attempt to reach your head as far towards the heel piece of your left binding as possible. This will send you into a massive rotation. This trick is pretty much blind and there's no need to grab since its a future spin. Just be sure to commit fully to the rotation and post the video here.