"Get Your Captain's License" is wholesale disaster from McGraw-Hillunder the International Marine label. From their web site International Marine cannot be reached by phone or email. The CD, supposedly generic, runs on Windows, not on Mac and if you dont like it,according to McGraw-Hill dont buy this hyped up book (ALTHOUGH this discrepancy does not appear in any of the ads). The text is rife with errors and misprints. Surly people at McGraw-Hill admit that if you bought the book you can send it back postpaid, a process that takes weeks for a refund on a book you bought to use, not to bicker over.It just ain't worth it!