The TurboTax Deluxe CD for 2011 is a tax preparation software by Turbotax that includes both federal and state taxes. It is available in English and can be used on both Windows and Mac operating systems. This software helps users easily prepare their taxes and ensure they are filings accurately and on time. The CD format makes it convenient to use on a variety of devices, making it a practical option for those looking to manage their personal finance and taxes efficiently.