The first thing you need to do for Financial Aid is complete the FAFSA (Free Application For Federal Aid). You can do this easily by going online to: http://www.fafsa.ed.gov
Your FAFSA must be received at the college/university of your choice by the deadline it has set. If you are not having your taxes done before the deadline, don't panic. Complete the FAFSA in an estimated format and as soon as your taxes are complete, submit a correction to your FAFSA.
It is crucial that schools receive your FAFSA by their deadline. If they do not, most schools will award minimal aid; if any at all.