I don't own a cardigan sweater, and I don't intend to anytime soon. Maybe you do. And, that's forgivable, assuming you're 11 years old and it's part of your parochial school uniform (or, you're a girl). If you're wearing one right now, please remove for the remainder of your time here at DSTRYR/SG.
I actually don't own any Gracie Jiu Jitsu instructional DVD (or video) either. But, from all I've seen on YouTube, I'm certain they are filled will top notch and necessary BJJ knowledge. Their "Combatives" series seems very thorough, but for me, as someone who's trained under another coach for the past 12.5 years, I've never considered buying them. However, I'm pretty intrigued by this new DVD release dedicated solely to chokes you can employ in street situations (using commonly worn clothing). Check out this teaser/promo vid featuring the always adorable Bros Gracie, and have your credit card ready.
[Side Note: In the title, I really wanted to say "douchebags" instead of "fools," but it seemed a little to crass. Still, I think you could have handled it.]