For the Class of 2024, the formulation is changing and Student Aid Index is the new EFC. This SAI calculator takes the changes into account so that families can estimate their SAI and see how they will be viewed by colleges. 

Use this spreadsheet to figure out approximately what your EFC will be. The author has preprogrammed the formulas used in the FAFSA. 

Federal Student Aid's official demonstration. 60 minute video.

Recent FAFSA Walkthrough; 110 minutes. Produced 10.2022 by Road2College; includes helpful advice. 

Start with Why Your EFC Should be How You Start Your College Search from DIY Rankings. And, view the video or the slides from a Fall 2020 EFC Presentation by George Schneider. For extensive detail on how colleges calculate EFC, see FAFSA EFC vs. Institutional EFC. 

The CSS Profile is completed through the College Board.

A few hundred schools use the Profile. Consult the list. 

Khan Academy-produced videos for each section.