Complete your FAFSA! This is the single most important thing you can do. From there, you can qualify for loans, and even work-study through your university.
You can try academic jobs funded by the college - such as teaching-assistantships (TA) or research-assistantships (RA). While a TA would help a professor conduct a course (grading, correcting papers), an RA works on research level topics with a professor. Other than that, there are many on-campus jobs that you can take up, like in the library or some food-stores.
Most colleges have a financial aid office to provide information. Private companies and non-profit foundations may provide scholarships, and information may be available online.
Financial aid can be applied for each year that you are enrolled in college. To find out what is available, visit your financial aid office for specifics. Federal and state money must be applied for each year.
Start at your college's Office of Financial Assistance. The staff can help you complete the application for federal aid and locate private scholarships and grants.