I think you will find that the book you hold in your hands is an excellent learning tool. I am happy to have supplied the text that you will read, but the layout of the tasks, the accuracy of the spelling and grammar, and the veracity of the information are all the result of hard work performed by project editor Sarah Hellert, copy editor Tricia Liebig, and technical editor Namir Shammas. Thanks to all of you for your excellent work. My thanks, as well, to acquisitions editor Jody Lefevere for bringing me onboard.