You should definitely get the book. It doesn't cover any of the stuff you saw in the movies past 1955, but it is far richer than the films on detail before that. All of the questions you asked will be answered by the book.
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.
