Step 1: Submit the FAFSA (Free Application for Federal Student Aid) at fafsa.ed.gov. 
Step 2: You will receive an email notification to view your award letter on WebAdvisor when your aid has been processed. 
Step 3: Officially declare your major in the Enrollment Services Office. NOTE: You must have your transcript in before you can declare a major.  Your financial aid will not be credited to your account until all of your transcripts are in.
Step 4: Preregister for classes.  

For a more in depth walkthrough, visit http://www.tstc.edu/financialaid/applyingforaid.