A good off-campus place to start is the US Department of Education web site.
For on-campus resources, visit the University of Illinois Office of Student Financial Aid.
If you're looking for support for research, visit the Office of Undergraduate Research.
The School of Integrative Biology, with the generous support of its alumni and friends, offers several kinds of financial support for specific purposes:
Robert H. Davis Memorial Fund. This Fund was named in honor of Robert H Davis, an undergraduate student in Integrative Biology who was on track to graduate in May, 2008. His tragic death in February 2008 cut short what was clearly a promising career. This Fund was established by his family in his memory in order to provide support for undergraduate students to participate in undergraduate research, as Robert himself did.
William H. Luckmann Award is administered by a committee from the Illinois Natural History Survey. The award provides funds to support undergraduate or graduate student attendance and presentation of research results at the annual meeting of the Entomological Society of America (ESA) or a meeting of another appropriate professional society.
To apply for any of these awards, contact the School of Integrative Biology Awards Committee: SIBawards@life.illinois.edu