The most important issue is to determine when is the best for you, academically and personally. Depending on which program you choose, you can study for 3 weeks during the summer, one semester or for the entire year. You EVEN can study on National Student Exchange for a year, THEN study internationally. U.S.M. has a number of established programs in which you pay U.S.M. tuition. However, there are also a number of programs set up by other universities that allow the same low cost.
Scholarships are available for international study.
Yes, your aid package will be based on your study away program costs. On pre-approved programs you will get full credit for your studies away. It is important to note that credit is based on the transcript which is received from your host university. You should also be prepared to bring back your work, the books and the syllabi that you used for your studies away, so that accurate course equivalences can be established. You can be majoring in any subject as long as you explain the reasons why study away will help you in your academic career.