Yeah, but that's not a real big focus. It only shows the most basic scratches. it shows babies, tears, flares, orbits, and crabs. But you should still get this book even if all you care about is scratching. A lot of younger cats today pay no attention to the fundamentals of dj'ing...beatmatching, mixing, crowd control, etc.
If you want to learn how to scratch you wanna get one of the videos that DMC has released. I forget the name. Or go to
http://www.asisphonics.net and check "TheEver" Scratch tutorial.