Find out what your old book is worth. Is it valuable? Just a You can buy a guide to identifying first editions to make some sense of the confusion. Book Club .Look inside the book and identify the book 's publisher - complete the publisher field but leave out terms like limited, company or press. If possible identify the book 's date of publication. Complete the date fields - if you have identified the exact year of publication then put the same date into both fields..Several of the ways publishers use to identify their books as first editions include: If the date on the copyright page and thele page are the same. The words first edition, first impression, first printing or published on the copyright page. A specific series of numbersed a number line..In general, old books are best suited to a cool, dark environment around 65-70 you have an accurate identification of your book and know where it fits in the .