We're venturing into the Talking Tarot area, but you won't have the book with you while you're doing the reading, are you? If you're using the book to study and then taking what you've learned and apply it to your readings, then the book's energy is irrelevant.
If you plan on having the book in one hand and the cards in the other, you've got to remember that whether it's a new or used book, it's been handled by other people before you. And those people could just as easily have put good energy into the book as bad.
So, I wouldn't worry about the energy that's been imparted to the book.