UMass Amherst Scholarships
The best place to look for scholarships is through Academic Works, this database lists all UMass Amherst scholarships. Fill out basic information about yourself, and the system will prompt you to complete applications for scholarships for which you might qualify. It's an efficient way to access a huge number of scholarships that are only open to current UMass students.
Scholarships to Support Study Abroad
The UMass Amherst International Programs Office (IPO) has a very thorough list of scholarships available to support students as they study abroad both during college and after graduation.