This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
Have you read through the help text? That text contains quite a few tutorials that introduce you to the various features of Eclipse. Start with the Workbench User Guide topic, then go through the Java Development User Guide topic, and then the Web Tools Platform User Guide topic.