Our goal is to provide you with the best service possible. We are pleased to troubleshoot any installation or usage problems you may experience with our products. For solutions to technical concerns related to our books, software or Web sites, click here. For a listing of our English language book distributors outside the United States, click here . We offer a 30-day unconditional guarantee for all returns, provided the books and software are returned in good condition.
Customers are responsible for freight charges for returned books and software.