Most law school applicants familiarize themselves with test directions and question types, practice on sample tests, and study the information available on test-taking techniques and strategies. Although it is difficult to say when examinees are sufficiently prepared, very few people achieve their full potential without some preparation.
You should be so familiar with the instructions and question types that nothing you see on the test can delay or distract you from thinking about how to answer a question. At a minimum, you should review the descriptions of the question types and simulate the day of the test by taking a practice test that includes a writing sample under actual time constraints. Taking a practice test under timed conditions helps you to estimate the amount of time you can afford to spend on each question in a section and to determine the question types for which you may need additional practice.
LSAC publishes a variety of free materials to help you prepare for the LSAT.
You may also purchase additional LSAT preparation materials. For more information, check out LSAC's test preparation publications and law school guides.