The first step is to decide on a school and/or a country. Expenses will go far beyond the basics of tuition, housing, and books. If relying heavily on financial aid, you should also examine the possibilities of obtaining a work-visa. Some countries will allow students to work.
Use online resources. For example, the site used in accessing the Free Application for Federal Student Aid or FAFSA, will give a detailed list of overseas schools for which the FAFSA may be used.
Contact local groups with a national base, and international reach. For example, the Rotary Club, an international service club, offers a number of scholarships for three, six, and nine months of foreign study. Rotary also has a partnership with a number of international universities and offers a scholarship for those wishing to pursue a master’s degree at one of these sites.
Contact the U.S. State Department and inquire about Fulbright Scholarships. The Fulbright Program offers scholarships for those wishing to study abroad, but has a number of stipulations. For those able to qualify, a scholarship may offer medical insurance, a monthly stipend, an allowance for books and dependents, and help with tuition. You must hold a bachelor’s degree before being considered and have not achieved a doctoral degree at the time of application.
Check with the specific schools you are interested in, and contact your high school or college, which also may have information on study-abroad programs.