1. To become knowledgeable or informed about someone or something. We learned about the rotation of the planets in science class today. The point of the game is for kids to learn about important historical figures in a fun, exciting way.

2. To discover or uncover some particular information about someone or something. In this usage, a noun or pronoun can be used between "learn" and "about. I learned something interesting about the way gravity works today. See if you can learn any dirty secrets about our opponent.