Webbots, Spiders, and Screen Scrapers by Michael Schrenk

This book helped me to achieve many goals at work and in School. Be careful though! Web scraping can be addictive.

http://www.amazon.com/Webbots-Spiders-Screen-Scrapers-Developing/dp/1593273975/ref=sr_1_5?s=books&ie=UTF8&qid=1417560802&sr=1-5&keywords=web+scraping