Packtpub. com Subscribe to our online digital library for full access to over 7,000 books and videos, as well as industry leading tools to help you plan your personal development and advance your career. For more information, please visit our website. Why subscribe? Spend less time learning and more time coding with practical e Books and Videos from over 4,000 industry professionals Improve your learning with Skill Plans built especially for you Get a free e Book or video every month Fully searchable for easy access to vital information Copy and paste, print, and bookmark content Did you know that Packt offers e Book versions of every book published, with PDF and e Pub files available? Y ou can upgrade to the e Book version at packtpub. com and as a print book customer, you are entitled to a discount on the e Book copy. Get in touch with us at customercare@packtpub. com for more details. At www. packtpub. com, you can also read a collection of free technical articles, sign up for a range of free newsletters, and receive exclusive discounts and offers on Packt books and e Books.