College graduates (and even high school graduates) before you sell those text books from this last semester back to the school, think about keeping them. When it comes to your major, books that you used in your classes will most likely come in handy later down the line. This may especially be the case if you are in a job related to your college major.
You never know when a question may come up that you need answered. If it is a question that you think if asked (to a future boss or supervisor) would be something that you should already know the answer to, then you can go to a book that is trusted for the answer. This can save you from looking inexperienced or uninformed to your employer. Also, instead of trusting a source online for the answer (because lets face it, the web is full of unreliable sites), you can use a source that was recommended as trustworthy.
So, start saving those text books. You never know when they may come in handy. Plus, it's a great way to start a home library.