The best way to prepare for law school differs -- as you might expect -- from person to person. In general, I suggest:
...If you have time for significant reading before you show up for your school's orientation, consider books that familiarize you with areas of the law, but which are also "good reads." For example, "Simple Justice," an excellent classic about Brown v. Board of Education. Another example is "Dear Sisters, Dear Daughters," a collection of sincere letters from women attorneys of color describing their experiences as lawyers. "Gideon's Trumpet" is another excellent choice. "Why Lawsuits are Good for America" explains the tort system very well. "A Civil Action" is also suggested by many. Send me an email if you would like other suggestions.
...I also recommend reading one or two authoritative books about what law school is all about, and how to go about studying in a way that will be most efficient for you. Because law school is much more like the practice of law than it is like college, many students are unprepared for the challenges they face -- even though they bring to school the native talent, intelligence, aptitude and passion. Several books can help you in this way. Of course, I recommend the book I recently published, "1000 Days to the Bar -- But the Practice of Law Begins Now." In recent years, "Bridging the Gap Between College and Law School" has been required reading for entering students at my law school. Recently I read the new "Dummies" book about law school; despite its title, the book contains some excellent advice.
Be cautious about books that stress "survival" in law school, or that promote cutting corners ... after nearly 20 years of litigation experience, I can attest that the lawyers who cut corners are often not the most successful in their field. I encourage students to study "smart" and efficiently, striving for their "personal best" in law school ... that assumes their objectives include a rich, deep comprehension of law; achieving grades reflective of their capability and long study hours; and first time bar passage.
I'm happy to answer your questions -- send me an e-mail.