Check with your university study-abroad office. There may already be a sponsorship program in place that you can apply to.
Identify people and local businesses that may sponsor your studies. Use any connection you have, such as a friend's parent who owns a hardware store or a wealthy relative who may be willing to fund some of your education.
Write a sponsorship letter. In the sponsorship letter, explain the study-abroad opportunity at length, including how it will benefit your education. Let the potential sponsors know how they can get in touch with you if they're interested.
Call to follow up on the sponsorship letters after you send them out.
Use other resources. Study Abroad.com, for example, allows students to apply for possible sponsorships. So does the "Financial Aid for Study Abroad" section of the FastWeb.com website.