There are a surprising number of Three Card Monte tutorials on the youtube.
So what ever happened to the usual way of learning magic? You go to the magic shop, you talk to magicians, you read books. If this person had done what I did, go to a magic shop and say, "Hey, got a good book on dealing three card monty?" he would have learned this technique and many others.He seems to have the most important part covered though, practice. He needs more practice though, this looks a lot rougher than what I've seen done in person.