Studentaid.gov contains the most comprehensive resources when it comes to paying for college.
See links below for fast access to the most frequently searched topics:
Types of Aid - What types of financial aid are available?
Eligibility - Even if you think you won't get aid, fill out the FAFSA!
Aid for Military Families - Dependents of veterans or active duty personnel
How to apply - Start with the FAFSA!
Next steps - How do I find out how much money my school will offer?