Killer Poker

I had some questions about the Killer Poker books, the Killer Poker Hold'em Handbook in particular. Is it a beginner book or more of an advanced book? If I have already read:
HOH1 &2
SS2
TOP
Caro's Book of Tells
Little Green Book
High-Low Split Poker &
SSHE

would it be of any use to me? I noticed it had great reviews on amazon but wasn't sure of the people doing the reviews were beginners or advanced players. For anyone that has read it, how many stars out of 5 would you give it? Thanks for any help.