This is one of those things I should probably know and care more about...I just don't. This is good news, yes?
Very good, yes. A few ISPs have had a chokehold on the industry for years now and since cord-cutting became a thing, they have been trying to use their position to fatten their bottom line.
Net neutrality involves ISPs manipulating people's bandwidth (data) to/from certain sites so they can charge those websites more money to serve data to you/others. It's completely unnecessary except when wanting to create profit off features of the Internet that have always been this way. ISPs can essentially make winners or losers out of websites based on how much they can pay. Further, they can charge media websites/services fees while exempting their own video services, giving them an unfair advantage. This is really bad because of cord-cutting and the fact that only a handful of ISPs serve most of America.
There are other aspects of this
(such as backend carrier fees), but net neutrality serves to prevent ISPs from further monopolizing the industry and using their monopolies to screw e-businesses/websites/people purely for financial gain.