My son started a program to collect SAT, ACT test prep books and college review books from students who don't need them anymore and give them away free to students who can't afford them. He started in LA and now has programs running in San Francisco, New York and Boston as well. It is run by high school students for high school students. It is a super effective program that's a win for everyone. Check it out on www.collegecompanion.org and if you know anyone who wants to volunteer and help or programs that could use some free books, contact the program. And please 'like' the program on www.facebook.com/collegecompanion. Thanks.