Assume that all of these are available to all customers unless specifically listed as member only like the Welcome Package. Also remember that any preliminary codes are just that and BN could pull it, change the details or exclusions anything prior to release so always a bit of YMMV until the final release date

Mini FAQ
Coupons should not work for PREORDERS , Nook, Legos, Rosetta Stone, Digital, Gift Cards, Memberships, etc. There are glitches where sometimes an excluded item will be allowed but assume that is the exception to the rule
Free Shipping is $25 (before tax/shipping) or with membership.
Max 3 GC on a single online order.
Online only a single code can be applied to an order
Return period is 14 days after delivery (possibly 30 days for members though I've never tried)
Online ordered items can returned to a local store unless it's classified as a web-only item then it's at the store's discretion to accept
The long standing Free 60 day Trial Offer was discontinued in late May 2016

INSTORE CODES -- Click for printable
15% Off Single Item (B) Store Only Exp ??12/31/2017

15% off one item Store Coupon
Store Coupon K4W9H7J and Online Coupon BNJAN17
valid at BN.com from January 12, 2017 at 12:01am to January 17, 2017 at 2:59am Eastern Time, and at Barnes & Noble stores from January 12, 2017 to January 16, 2017 at close of business.


ONLINE CODES
20% Off Online Single Item
2T8PV4BXCQPMA exp 1/17/17 2:59am
3N32VQM1FRV51 exp 1/17/17 2:59am

15% off One Item Online -- All Customers -- re-usable online. Unknown Expiration
9DAWJ1Z88Z134
NKMMWDZJXAE73
VP5ZZ6QN15VUU
UKTSTGZRDURTL
SLDJ4YKZSZKPA
SQ63RKJ3FTF48
N1BBG1DNGW6AF


15% OFF $50 or more
BNJAN50 -- unknown expiration, most likely 1/19 am 2:59am ET

Several upcoming possible codes sometime during January. ?? when they go live. So far none of these have shown any activity. Discounts are best guess for now
BNJAN25 25% off Single Item

BNJAN40 $5 off $40 or more

"New Member" Welcome Coupons ONLINE ONLY EXPIRES February 27, 2016 2:59am ET
Thank you to our member benefactor for this set of coupons
V7D3R3P $10 off $40+ "Home & Gift" Single Item EXP 2/27/2017
L9A8X8B $5 off $20+ Toy or Game Single Item EXP 2/27/2017
A8F3E4X $5 off $15+ Single Music CD/LP EXP 2/27/2017
F3F9V7X $5 off $50+ total Purchase EXP 2/27/2017
N7V9A3D $8 off $40+ single DVD/BD EXP 2/27/2017


"New Member" Printable In-Store Member Only Coupons Expires end of business February 26, 2017
Free Latte with Cafe purchase exp 2/26/2017
In store $5 off $15 Single Music CD Exp 2/26/2017
In store $5 off $50 Total Transaction Exp 2/26/2017
In store $8 off $40 Single DVD/BD Exp 2/26/2017