The phrase "to book a tour" means to make a reservation or appoint to go on a planned journey or visit to various destinations, usually with a group of people and guided by someone. Full definition
Most writers are aware of virtual book tours for novels, some have taken a closer interest in them and some have run their own tour promoting their own novel. (andyshack.com)
If so, I'd definitely recommend you try to catch the superstar author on book tour. (bookpage.com)
Have you done a virtual book tour with sites catering to your book's audience? (buildbookbuzz.com)