The book says "make reservations for the Vatacan and the Borghese Gallery, but how do I do it? Can I do it for free like I did for the Florence sites?
For advice on reservations at the Vatican, go to this very informative website, http://www.roninrome.com/2009/03/27/vatican-museum-to-pre-book-or-not/.For the Borghese, reservations are mandatory, first try online at www.ticketeria.it.