Mr. Untouchable is great: it's an autobiography of a heroin dealer (he's a bit player in American Gangster). It's a very 'pure' business, in the sense that you

Mr. Untouchable is great: it's an autobiography of a heroin dealer (he's a bit player in American Gangster). It's a very 'pure' business, in the sense that you can quantify product quality directly. Founders at Work is also good. Lowenstein's hagiography of Warren Buffett is a great bio of a famous guy, but you should keep in mind that he did have some connections (and almost certainly would have succeeded even if he didn't).