O'Reilly

Your group members receive a 35% discount on O'Reilly, No Starch,
PC Publishing, Pragmatic Bookshelf, Rocky Nook, SitePoint, or
YoungJin products purchased directly from O'Reilly. The discount code
your members should use is DSUG. Orders can be placed online at
http://www.oreilly.com/store/ or by calling 800-998-9938. Your members
are also entitled to a discount on O'Reilly conferences and tutorials.

Apress

Place your order with our distributor, Springer, by calling 1-800-SPRINGER. Once you connect with a customer service representative, please mention the discount code, "APRESSUG" along with the name of your user group.