I love the method they use to teach in this book. It starts by letting you learn some common funk/r&b bass lines and doubling it by guitar.
It's also great in the way that they teach you how to apply the stuff you learn and the context in which it can be used.
the audio examples supplied are a great resource which can be slowed down OR sped up! Only thing I don't like about it is that it can take quite some effort to make loop points in the audio player online.
Some concepts might be too hard for total beginners, but they're still doable, even if you can't perform everything at 100% the speed that they use.
right, last but not least, you get chord diagrams with their inversions, scales explained that can be used and how to use them.. Also transcribed example songs.
What I love the most about this book is that everything you get thaught is being thaught in a way that you'll have no trouble applying it on your own songs or during jams.