Probably the best starting point is the website for the Law School Admission Council (LSAC) at www.lsac.org
. It should provide you with a good overview of law school and where the LSAT falls within the bigger picture.
My only personal advice at this stage is not to let horror stories discourage you from pursuing law school. As a 1L, I've noticed that most people emphasize the amount of reading required without mentioning how fascinating it is to learn and discuss rules and policies that influence all of our lives. If you show up to each class prepared and enthusiastic, you can really enjoy yourself. If you have common sense, enjoy discussing and debating issues, apply yourself to the material, and stay organized, you'll do fine.