One of the most memorable things I've come across on Hacker News was a link to this article about avoiding trolls: https://github.com/prettydiff/wisdom/blob/master/Avoiding_Tr...

Even as somebody that's used the Internet frequently for 25+ years, I was guilty of falling for some of the traps outlined in this article. I think something like this being taught in schools would shift the state of conversation on the Web dramatically.