This is the most boring instructional video I've ever seen. We get to watch him play intervals over and over and over and over again. Oh, we also get to see him sitting on a rock with mountains in the background. If you know what octaves and fifths (as well as other intervals) are, then just play them up and down the neck as you listen, making sure to adjust when they're out of tune. That's essentially the entire content of this book/DVD. What's more, this guy loves himself--he can't get enough of himself. And it's baffling because he's so forgettable. Save your money.