heart297- Most universities will have an online employment web site where students can search and apply for jobs. Search by the term "work- study" and see what comes up. Specific jobs on campus are usually designated as work-study jobs and are only available to students who qualify for the program.
You might also want to consider talking to the financial aid office or to your counselor. They will usually have a list of work-study jobs that are available. They might even help you apply for the jobs if you ask.