Taking a Continuing Legal Education (CLE) course while you are in law school is a great networking opportunity. It is a great way for you to explore an area of law that you might be interested in and be in a room of lawyers who are practicing in that same area. Many states offer CLEs for free or at reduced rates for law students. When you go, try to introduce yourself to a few of the attorneys, explain that you are in law school, and are interested in that particular area of law. They will they be impressed by your proactive nature and you can also use that opportunity to set up an informational interview. My state is offering a CLE about becoming a solo practitioner that is only $25 law students (it costs almost $300 for attorneys!)
Search your state's "Continuing Legal Education" office to find out about local CLE opportunities.