Rushing new players through dungeons shouldn't be encouraged

[Yeastyloins]

Honestly, just watch a video for said dungeon or raids before you do it. Done. You know what mechanics come up and thus leaves you time to focus on what buttons you need to hit. Trials though have cool set pieces and story moments built into them so I'd say keep those blind if you care alot about the story. But most guides even then will not spoil big story pieces.