I love this book and keep going back to it. It has alot of input from artists which is helpful because they know what they are talking about, they are out there doing this or have done it and been successful. There is a lot to this book it covers almost all of the areas of rapping, all of the ones i can think of and then some.
If your interested in Rapping or hip-hop and want to know about it and the techniques used then you should definitely check this out.