What makes a book valuable? Is it age? Scarcity? How old is an old book? Which souvenir reprints consistently trick people into thinking they've got a million dollar antique on their hands? Are public libraries good? What unassuming volume does Ken ravenously hunger and thirst for? If I spill a glass of fruit punch on my book, is it cool to dry it off in the microwave? Answers to most of these questions and more, from Ken and a little pamphlet called 'Your Old Books'.