If you are a beginner there are, I'm afraid, better books out there... if you are not a beginner then this tutor will probably be too easy for you. So it's hard to see who this book would be right for...
I've learnt fingerstyle blues mainly via Kenny Sultan's near faultless series... but his style is a bit ragtime for me and I had hoped this book would take me back to Mississippi. But it's pretty thin, with only about ten real pieces included and, while quite a few have got that deep south bluesy sound to them, they are all very simple and pretty short and I doubt they'll hold my interest long. The accompanying text is adequate, but not much more than that. So, overall my hopes weren't really met and I'm still left looking for that elusive intermediate fingerpicking book in the delta style, as most seem to be either for beginners or for players much more advanced than me. There are some possibilities on Amazon, but few with reviews so I think, afer this gamble, I'll play safe and revert to Kenny Sultan for a while, even though, excellent though he is, he's not quite taking me where I want to go.
Back to this book and who it might be right for... perhaps someone who's already done a beginner's book like Beginning Fingerstyle Blues Guitar (Guitar Books)
or the aforementioned Kenny Sultan's Acoustic Blues Guitar
(which are both great introductions) and wants to consolidate what they've picked up from either of these, whilst adding a few easy tunes to their repertoire. This would definitely do that. Other than that however... well, it's not been a waste of my money and there's nothing really bad about it, but I think you are better off looking elsewhere.