The above image is borrowed from this informative website.
The most common deadline for the FAFSA is March 2, 2015. There is STILL TIME. This website here, administered by the federal government, has a more exhaustive list of items to have on hand prior to starting the FAFSA. The same article also has a link to information specific to people using a MAC to file their FAFSA vs a PC.
Finally, read this article here to find out what happens and what to expect after submitting your FAFSA. The article discusses how to check the status of your FAFSA, what to do if you need to make a correction to your FAFSA, and so on. A great resource!
So, what are you waiting for?! Go on. Do it! (See previous posts for FAFSA website).