I'm TA'ing Austin's 9am class, Mondays and Wednesdays. She also teaches another class, from 1030am-1145am which will be TA'd by some friends of mine who are great. As TAs, we will be primarily responsible for teaching and grading small assignments on the Bluebook (citation manual for law). You may have Austin if you're in Section 3. If you go to law.du.edu and click on "Registrar" then "Class Schedules" then "Fall 2010" it has a list of who's teaching what when (for the most part). It also has a tentative schedule for the Spring.
I got the TA job via a combination of factors. I did not have the top grade in the class. Nor did I have the lowest. But I think I showed a good attitude and that I play well with others. Lawyering Process, imho, is the hardest thing you'll encounter first semester... at least until Finals (at which point LP will be over, because there's only a final memo, not a final exam). Individual LP profs hire their TAs. So having the right rapport and "fit" is important. TAs for Torts, Crim Law, Civ Pro, etc. (often called AAP tutors) are selected because they got A's. And that's about it for the AAP selection process. My AAP tutors were invariably good, so that's no dig on the AAP program, but I think it's more self-selective, whereas Austin picked me and the other TAs she's using. Small difference, I suppose, but as you'll learn... in law school, you take any ego-boost you can get! Ha ha.
I know who BWOD is. He was in my section. He's a good guy, and probably has more info about things to do around school. (I am a little older and have a girlfriend and don't live near campus.)
Other than telling you to enjoy this last summer as a "civilian" I guess for complete law nubes (like I was) I'd advise something general such as "Law 101" by Feinman. He covers all the basic 1L classes and the concepts contained therein. Civil Procedure presents some of the more alien concepts, as I'm sure you've heard, so the E&E can help there, or "Starting Off Right in Law School" by Nygren. Some profs have their booklists up on dubookstore.com (select LAW-AUTUMN). If they have something on there (usually listed as Optional), use it.
Happy to answer any other questions as they come along.