Ellen Finkelstein learned AutoCAD in Israel, where she always got to pore over the manual because it was in English. After returning to the United States, she started consulting and teaching AutoCAD as well as other computer programs, including Microsoft Word, Excel, and PowerPoint. She has also taught courses on Web writing and usability. Her Web site, www.ellenfinkelstein.com, contains tips and techniques for AutoCAD, PowerPoint, and presenting, and she publishes the AutoCAD Tips Blog and the AutoCAD Tips Newsletter. Ellen has written extensively on AutoCAD, including articles for Autodesk’s Web site and features for AutoCAD’s Help system. Ellen’s first book was AutoCAD For Dummies Quick Reference. Since then, she has written books on PowerPoint, OpenOffice.org (OpenOffice.org For Dummies), Flash (such as Flash CS4 For Dummies), and Web technologies (Syndicating Web Sites with RSS Feeds For Dummies). You’re holding the eleventh edition (wow!) of this book, which previously appeared for AutoCAD releases 14, 2000, 2002, 2004, 2005, 2006, 2007, 2008, 2009, and 2010.