You can find us on Twitter, where we keep you informed about programming and entertained about life: @cbkeur and @aaronhillegass.

Keep an eye out for other guides from Big Nerd Ranch. We also offer week-long courses for developers. And if you just need some code written, we do contract programming. For more information, visit our website at www.bignerdranch.com.

You, dear reader, make our lives of writing, coding, and teaching possible. So thank you for buying our book.