There are more than 500 student organizations on USC campus, so why not join at least one? Go to Garnet Gateway -This is a giant list of all on-campus organizations and activities as well whom to contact if you are interested in joining them.
Whether you have a few hours or a whole week to give, the Leadership and Service Center can connect you with a meaningful service opportunity. Find a program or an event that will help you assist people in need locally and in other areas of the US.
You can get a Buddy who has been at USC for at least 1 semester, get a better understanding of American life, and more opportunities to share your own culture with another USC student. Learn more here.