A lot of books nowadays are re-hashes of previous authors,as has been said theres only so much old ground you can tread before its been-there seen-that,it has never been easier to vanity/self publish whether for ego or cash,those who do it because they have a need or passion to pass on hard-earned knowledge are different,but they are few and far-between,thin on the ground I havent bought a book for years but there is ONE i am waiting for,snaremans book,when its finished something tells me its not being written for cash otherwise it would be filled with naught but illustrations and diagrams,I