One thing I've learned about was cyberbullying. Now I know that not only does cyberbullying mean bothering someone online, but it can also mean misusing their personal information, such as posting it on a public place.
Another thing I've learned about was copyright and fair use. Now I can make sure that I'm using someone's property fairly, such as giving the person credit, so I won't disrespect their copyright.
A third thing I've learned about was images in a presentation. If I make a presentation, I'll make sure that the images improve the presentation, not distract the audience from its main goal.
