Check out these websites. It may just lead you to some great scholarships, specifically for adults returning to school.
http://www.finaid.org/otheraid/nontraditional.phtml
http://www.collegescholarships.org/grants/adult.htm
Of course, your first step is to complete the FAFSA form (Free Application for Federal Student Aid): www.fafsa.ed.gov. It’s rather involved but definitely worth it.
Be sure to check with your employer as they may have some kind of benefit for employees wanting to return to school.
Good Luck!