Know When to Ask Questions
Don't expect the judge or his law clerks to provide a primer to you on the substantive law. Do research on your own, and ask questions about the law after you've discovered what you can on your own.
When you do ask questions, be prepared to ask all your questions at one time.
When the judge assigns a deadline, she expects you to observe it. If a project is taking more time than you think the judge anticipated, let her know in advance of the deadline. Your completion of an assignment may affect other projects underway in the judge's chambers. Never just let a deadline pass unsatisfied.
The written work you submit to the judge may be a "draft," but it should be your final, polished work product. Mistakes are embarrassing.
Be On Time
Know the office hours for the judge's chambers and understand what hours you are expected to work during your internship. If someone doesn't tell you the first day, ask.
Most judges have a policy on taking time off during your internship. Know the judge's policy before planning any appointments or vacations.
Use Court Email and the Internet Appropriately
You should use the computer resources provided during your internship only for work-related purposes. Don't send any email that you would not want the judge or his staff to read. Reserve your personal communications for your personal email. Avoid using "reply all," and be very careful about forwarding emails, especially from the judge.
Be aware that the court may monitor the sites you visited and the amount of time you spent online. Don't stream music or video.
Be Discreet and Respect Issues of Confidentiality
Take time to review the Code of Judicial Conduct for Judicial Employees. Don't talk about a case outside chambers—including in the courthouse elevators or restrooms. Preserve chambers confidentiality and guard the judge's deliberative process. Avoid conflicts of interest. Know the judge's policy about extracurricular legal activities, and disclose activities involving law firms to the judge before you participate.
Dress for Success
Assume the judge has a dress code and that you will be required to wear business attire. This means suits for men. It's best to start off with a white shirt and conservative tie. Go with something bolder if you observe that blue or striped shirts and more stylish ties are acceptable. For women, suits, dresses and jackets, or professional separates are appropriate; refrain from wearing low-cut blouses or short skirts.
If the judge permits business casual attire in chambers, this generally means khakis or trousers and long-sleeve, collared shirts for men. For women, it means dresses, skirts or pants, and a blouse or sweater. No sandals or flip-flops!
Judicial chambers are a very intimate place to work. The judge's staff is small and close-knit. Be courteous and respectful. Don't ask the judge's secretary or judicial assistant, courtroom deputy, or law clerks to do errands or other work for you.
In addition to these tips, remember to show your enthusiasm about your internship. Watch as many courtroom proceedings as you can. Socialize with the law clerks, and accept invitations to accompany the judge to law-related events whenever possible.