BEFORE YOU CHOOSE
What to know
Expect players to steal queens and defend their own. Explain those effects before play so losing a queen does not come as a surprise. The publisher mentions arithmetic and memory; that describes what the game uses, not a measured learning benefit.
Learning the rules
There are a few card actions to learn, all serving the goal of waking and keeping queens.
Planning your time
Allow extra time to set up, explain the rules, and pack away.