This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
TLD files generally go in the WEB-INF folder. If you're going to be developing Struts applications in eclipse, you should download the Eclipse Web and J2EE tools if you haven't already. Once you have these tools, you'll define your project as a "Dynamic Web Project" and it will have all the subdirectories needed.