The Free Application for Federal Student Aid is here

Advice on how to fill that FAFSA out is available here, also for free:

Some private colleges also require the Profile Form, and information on that can be found here:

National Association for College Admission Counseling (NACAC)

The College Board   SAT, ACT, APs, and My Big Future for a college search tool


Independent Educational Consultants Association

 The American Institute of Certified Educational Planners