I believe there is a section in "The Encyclopedia of Card Tricks" that goes over R & S, in case you need some effects to do with it. But honestly, once you create an R & S card/deck, it's pretty easy to figure out what you should do.
Assuming that Villain is essentially a new Roughing Stick...:
If your looking for how to apply it, normally with a Roughing Stick, you simply press it against the card, and make a line on it (usually in the center). This roughs that area. You can apply Roughing to another card in the same area (or on the back of one). Where the 2 areas are Rough, the cards will have a lot of grip. Where the 2 rough parts meet, the cards will "stick" to each other (like how Grip Tape grips your shoes on a skateboard, because it is rough). With a little bit of pressure, you can slide them apart in performance.
Try it with 2 cards: Take one and on the face, put a line from top to bottom down the center. Then, on the back of the other one, do the same thing. You can then stick the 2 cards together, and you'll see that one is hidden behind the other. You can toss it in a deck, and it'll work like one card, and then when you go to find it, you can push them apart. If you've used an I******** D*** before, it's the same concept.
(I remembered this video, which uses a Roughing Stick, but it is essentially the same concept. Watch how he applies it. You can apply it in whatever pattern you want, but that is how you would use a Roughing Stick):
Edit: I accidentally linked the Villain Trailer. This is the right one now^
I'm fairly certain Villain will work the same way, but you can probably get the instructions from E by contacting their support team. You should definitely do that anyways, because DM also gave some effects in the 1 hour instruction video. Also, your friend may be able to recover the email that came with it (I think it's 30 days that the deleted email remains prior to being deleted forever?), or he might have the video on his Ellusionist account (if he has one).
