I’m adding the following links to The Best Resources To Learn About The U.S. Census:
It’s Easy, a video from the Census showing how to complete the form.
The Questions on the Form, an interactive feature from the Census showing how to complete the form.
Portraits Of America, a pretty amazing collection of video stories (that are closed-captioned) from people who have benefited from the Census.
Thanks to U.S. Citizenship Podcast for the tip.