Another important web site is Sun's JavaSoft's division at http://java.sun.com/. This is where you'll find the official word about Java including documentation, software, announcements, a tutorial, and much other useful information. You should explore it now.
Of particular note is the class library documentation at http://java.sun.com/products/jdk/1.1/docs/api/packages.html. You will need to refer to this again and again. You can also download a zip or tar file of this documentation and install it on your own PC.
Unfortunately you cannot subscribe to this alias directly. If you registered for this class early enough and have an account on utopia, you're probably already on it. Otherwise, you'll need to get an account on utopia an bug the sys-admins (help@duke.poly.edu) to add you.