Begin book briefing as early on as you possibly can. You may need to write full briefs for your first few cases just to get a feel for what information you need, but after that you will appreciate the time you save. Start your outlines early. Unless you enjoy stress and long hours, there's no reason to wait until the end of the semester. Take advantage of study aides. They exist for a reason and there is no shame in using them.
Join a study group or form one of your own. Even a very small study group can be a great resource. Visit your professors during their office hours. Chances are you really will have something to ask at some point. And you may discover a kind, supportive person behind that scary Socratic method. Get to know a 2L or 3L, someone who can share old outlines and fill you in on what your professors will be looking for on exams. Sign up to have an attorney-mentor through your school's career services. You can be matched with a local alum who will hopefully give you support, encouragement and take you out to lunch.
Get some sleep. Really. The first year of law school is the most stressful and tiring. Try to not make a habit of skimping on sleep, though. Exercise. Stick with an exercise routine if you already have one, or start one if you can. At least stay active. Take a walk around campus in between classes. Eat healthfully. You will need energy from more than caffeine! Make sure you are eating good "brain foods" regularly, especially as snacks.
Following these tips is no guarantee of success in law school. There is no substitute for hard work. You have a lot going for you, though. Just being accepted into law school is an accomplishment in and of itself. You have come far and are in good company. Now the rest is up to you.