Go online to the FAFSA site linked below and fill out an online application for Federal Student Aid. You will need your tax information and personal information (social security number, etc), so have those things on hand.
List the schools you plan on attending on the FAFSA site. The government will forward your information to those schools.
Check the mail regularly. In several weeks time you will receive an award letter from your school telling you the number and amount of loans you are eligible for.
Cross off the loans you do not want (and initial the changes), sign the form, and return it to the school to complete the process.