Barnes and Nobles - 50% off one item Coupon - expires 4/3/2011

According to SlickDeals there are coupons available for 10%, 15%, 20%, 30% or 50% off one item. You don't have to be a member either to use the coupons. There are separate coupons for non-members and also B&N members.

If you are interested in the 50% off coupon for B&N members, take a look here or for non-members here and save some money on your books!