To become a lawyer, you will have to go a 4-year undergraduate degree in a recognized institute and graduate with a high GPA. Then, you have to take a Law School Admission Test, which will determine whether you get into law school. When you pass, join a law school that is recognized by the American Bar Association. Check out www.ehow.com/how_2032595_become-lawyer.html for details.
Intern at a law office. Better than that before I took my LSAT I interned for the district attorneys office for about 1 year. You should start studying things like psychology, critical thinking, public speaking and get a feel for what's its actually like to be an attorney. After all you might not like it.