Yes, it is way too early to be thinking about outlining and exams. However, your exams are essentially your entire course grade in law school, so it's a good idea to have a basic understanding of how your day-to-day studying will eventually lead you to an exam. These study guides go over the basic process of law school, from the first week to exam period.
Acing Your First Year of Law School by 
McClurg's 1L of a Ride by 
Getting to Maybe by 
A Weekly Guide to Being a Model Law Student by 
A Short and Happy Guide to Being a Law Student by 
Sum and Substance Audio on How to Succeed in Law School, 2004 by 
1000 Days to the Bar by 
One L by Scott Turow's One L (listed above) is generally considered the seminal work about the law school experience. However, it also describes the law school experience from a very specific perspective-- that of a white, cis/het male with a premier education studying at Harvard Law in the mid- to late-seventies.
In 2010, the University of Missouri-Kansas City Law Review ran an issue featuring 14 essays responding to One L:
The beginning of law school can feel a little overwhelming for anyone, but if you've never taken a government or political science class before, you may feel like you are starting out behind some of your other classmates. One of the best things you can do to prepare for law school is to familiarize yourself with the way our government and court systems work.
Below is a playlist of 50 videos from Crash Course: Government & Politics, which provides a thorough and approachable introduction to American civics. If you're in a hurry, I'd recommend #9: How a Bill Becomes a Law and #19: Structure of the Court System. You can jump to those videos by clicking on this icon in the video window below:
One of the most important ways you can prepare for law school is by fine-tuning what some might call your "general, functional human being skills." For many, law school is a prolonged period of intense stress, which can lead to an increase of bad habits (e.g., smoking or drinking), decreased immune system, and strained personal relationships.
I know, talking about how stressed you're about to be doesn't help diminish your stress, but planning and establishing healthy habits now will help.
For more tips and links to healthy living resources at the University of Baltimore, check out our Libguide on Mental Health & Law School:
If you want to get a feel for the world of legal academia, you can start immersing yourself in the world of legal theory and discussion with some of these fine podcasts. All of these links are to the podcast's website itself, but they are available wherever fine podcasts are distributed.