Black holes are probably the most mysterious objects we can find in the universe.
When I was a kid my first science project was to do a little research and exposition about black holes :).
The event horizon is something interesting, for example if we were able to see a person crossing the event horizon, this person will eventually "freeze" from our perspective and we will never see this person moving again for the rest of our lives. But of course, seeing something like that is probably impossible.
Yes, when a person gets into de event horizon their perception of time totally change. To the point that eventually for them the time will pass faster and faster.
The black holes are an incredible topic, It's has a lot of way of see it