There are many funding sources for study abroad. Students may be able to apply their college financial aid, apply for low interest private bank loans, or apply for scholarships. The excellent Handbook produced by Study Abroad professionals is very useful: www.studyabroad.com/handbook.htm.
Financial Aid In general, if you have applied and are eligible to receive financial aid at home, your aid should apply toward any program sponsored by a U.S.-based institution. Please verify with the financial aid office.
Scholarships Here are just a few links to scholarships that are open to undergraduate students. There are many others worth researching as well.