Today is the Great American Smokeout! If you or a loved one is addicted to the nicotine, today is the day to try and cut that tie. The American Cancer Society has a Stay Away from Tobacco page with a bunch of useful resources. The CDC has a listing of sites to help you quit smoking, and SmokeFree.gov has interactive tools to make sure you quit and stay quit. My favorite resource for cold turkey tips is WhyQuit.com. The library also has a number of books about smoking and smoking cessation.
Even if the Great American Smokeout snuck up on you too soon and you're just not ready today, you can always pick a day that works for you, and just keep trying. It's rough at first, but it gets easier. Good luck!