The boss is scary as Hell and impossible to learn. What I mean by the latter is every boss before it you could learn relatively safely. Oryx is a hard battle for a new player, but is easy to participate in from a distance: don’t get in too close, get in shots when you can. As you learn his patterns and behaviours you discover more and more opportunities to do damage, and eventually get SB pretty reliably.
Oryx 2 is an even harder battle, but the same applies. Get to the boss, loiter around the edge, learn his patterns. Use a Assassin or Sorcerer and you can get in some damage if he is not steamrollered. Eventually you learn how to do damage with any class. Tomb bosses are similar.
Other bosses you can do with a large enough group. Shatters, Red Dragon, Ivory Wyvern can all be done easily with enough people. Again this lets you learn their patterns for when there are fewer people.
But the nest there is no easy way to learn the battle. You can’t just sit in a corner and watch, helping if you can but mostly taking it in. It has no safe corners or edges. You can’t easily hide in a large crowd for safety, as for the Red Dragon or Shatters bosses, as you need to be constantly moving – you still need to know the patterns and shots. You can’t wait and see what other players do/where they go, as if you are a moment behind the other players you will get shot.
I’ve been in a fair few nests. I’ve gotten to the boss twice, but nexused almost immediately both times as I did not know what I was doing and was being pummelled by shots and status effects which would have soon killed me. Most times I don’t even make it that far, nexusing or dying earlier. But that I understand and am getting better at – the enemies you run into on the way are hard but understandable. I just don’t see how I will ever get to grips with the boss though.