But, it will cost you if you search beyond a free introductory period.
I was completely unaware of this site, but it boasts what they claim to be the largest-collection of primary Civil War documents anywhere.
The name of the organization is Footnote.com. Using the census, you can find out if your ancestors could read or write, had attended school, marital status, occupation, and if they were insane, idiotic, or a convict.
It is a subscription website but you can get a free trial.
www.footnote.com
You might Just Find Out Your Ancestor was Quite a Scamp. --Blockade-R