I have the Manhattan LR, but haven't cracked it open. But I've talked to many people about the Manhattan books and said they made the difference. However, it may take you a while to get through them the LR book alone is around 600 pages.
... whereas the conclusion is about books. 25 films in Z were ... of them were based on books. But what if there were ... films based on non-fiction books (I.e. Not novels)? Then ...
Pretty sure it's not available any more. You can pick up pretty useful LG drill books pt 1-20, and 21-40 etc all repeated three times, on the Amazon website.
I have the PDFs... I never bought multiple copies of the books. I bought two different ones used for 5 bucks a piece on amazon. One was clean and good to go and the other was marked up even though it said it was clean so I tossed it :P