Apply for your PIN (personal identification number).
You can do this any time, and it only takes a few minutes. One word of caution. Put this informaiton in a safe place and DON'T LOSE IT!
If you have already created a PIN for an older brother or sister of your senior, you must use the same PIN. If you don't rmember it or cannot find it, you will have to go throught the hassle of getting a new one.
Fill out the FAFSA as soon after January 1st as possible. You might want to alert your tax preparer that you have a high school senior and that you will need to have your tax returns finished as soon as possible.