If you're waiting for financial aid and you can't find your textbook in the libraries, talk to your instructor. Sometimes instructors have copies of the textbook that they will put on reserve in your campus library, or can help you find alternatives such as renting or sharing a textbook.
This page explains the two main categories of scholarships at STLCC. There are scholarships that can be used for textbooks in both categories, such as the Book Scholarships and the Bowling for Scholars Book Fund.