CNA Training in the Chicago Area

Hi everybody. I am currently a sophomore in a Nursing program at St. Xavier University in Chicago. Primarily I wasn't planning to or even thinking of enrolling in a CNA program. Recently I thought about it because I felt it would help me gain a bit if experience. I need one that is close to me because I have no car and would have to take public transportation. PLEASE help me!! Also, everything is sooooo expensive. Any help is greatly appreciated!!