Mikhail Popov, a data scientist at the Wikimedia Foundation, led a workshop on visualization literacy recently. A short guide from that workshop is now freely available online.
Beginner’s guide to visualization literacy
Unemployment in America, Mapped Over Time
Watch the regional changes across the country from 1990 to 2016.
Divorce and Occupation
Some jobs tend towards higher divorce rates. Some towards lower. Salary also probably plays a role.