Don't be too efficient. Even a smart West High grad can't predict what skill or book or class or teacher will be absolutely critical 10 years from now. And take a chance on new friends. Look beyond the people you hung out with in high school. Look beyond race or gender.
College is a chance to meet interesting people from different states, cultures, countries.
They'll make you more interesting too. Make each day count by having the courage of your convictions. And the courage to keep an open mind. College is useless if it doesn't make you rethink your most cherished convictions. You don't need to change the most important values your parents instilled in you.