Eh, we had to read this book called "Bridging the Gap" about bridging the gap between undergrad and law school. I read like 20 pages of it (out of maybe 200) and then tossed it in my closet for the rest of the summer. The best advice I can give all of you future 1Ls right now is to relax, relax, relax. You are going to be crapped on for the next 3+ years, so enjoy the sunshine and lack of any responsibility while you can. I am sure some books are more helpful than others, but what really helps the most is to get into contact with 2Ls from the school you are going to, and get their outlines for the professors you will have. That by far will help you the most of anything. Since you will be taking the same classes with most likely the same professors they had, that is your best resource to start with. Don't worry about asking them, as many will be more than happy to give up their outlines for a poor struggling 1L who is trying to figure out how the heck to apply UCC 2-207 to a battle of the forms problem. Also, some schools have student bar association website where people upload outlines as well. Outlines will be your best resource for studying for the exam. You take all of your notes you have for a class and condense them into 50 pages. If you can find someone who has already done this, then you will be well ahead of everyone else and you will know what to expect at each class. Furthermore, invest in Emanuel's or Gilbert's (just don't let your professors catch you). Emanuel's for Contracts saved my butt countless times. You can get them on amazon.com for pretty cheap. Don't bother with hornbooks as they are just more hassle than they are worth.
Honestly, don't burden yourself right now with thoughts of law school. You will have plenty of time to do that in law school, and every summer for the next 3 years. For me, orientation was the most useless thing about law school. They tried (and succeeded) in scaring me into believing that I was doomed to fail. I ended up with a 3.6 my first semester. If I had to do it all over again, I would have skipped orientation, as it was not helpful. You have done undergrad, you know how classes are. This is going to be more work, but you've come this far, and you're up to it. Reading a book about law school right now may end up scaring you even more.
So, go to orientation, meet some new friends, Facebook or otherwise, and then remember these tips:
1. Get outlines (but make sure the students you get them from got good grades haha)
2. Look at commercial outlines (in the words of my Corporations professor: the person who has these is a step ahead of everyone else. Why the heck wouldn't you do the same thing?)
3. Keep up on your reading from day one, because it is a tremendous amount, and it will take longer your first semester, as you won't know the language yet
4. Relax for the next few weeks. Have some drinks. You know nothing of the rule against perpetuities right now. What I would give to be you.
Also, I have one more piece of advice: watch your favorite legal dramas/movies and enjoy them while you still can, because after law school, they are pretty much ruined when you consistently find glaring legal plot-holes (I'm looking at you, Law and Order SVU).