Computer Books Online occasionally offers discounts to our newsletter subscribers. If you have a DISCOUNT CODE, just enter your number into the shopping cart during check-out, and the amount will be deducted from your total order. To start receiving our newsletter, with discounts and other special offers, join our mailing list on the left side of this page. 

Some discounts are automatic, and no code needs to be entered. If this is the case, your newsletter will say NO DISCOUNT CODE NEEDED.