This is my first time working with this site and the Census data.
On the developer home page it says:
"Data are accessible to software developers through a stateless HTTP GET request. Up to 50 variables can be requested with a single API call. In order to access data, you will need to insert a key into the request URL in order for query results to be returned. If you do not have a key assigned to you, you will be directed to the Request a Key page where you can register for one."
Tried looking for a document describing the possible GET commands and their format. Could not find.