Read/skimmed thru it. Not informative to me. Although I build my own and others engines and i can still see to pee and pick up my own crankshafts. Don't need to be shown the way. Not sayin his book isn't informative to some. Read it over a day last year while I was sick and told the wife to send it back and get the money back. No interest in writing a book. Actually no patience for it. Just wasn't for me.