Heya!
So with such a good AI as it exist nowadays,
It's finally time for story mode instances!
The idea is you get NPC group-mates to run an instance - dungeon, raid, or BGs for the first time:
-Entirely optional: you can start grouping up right away, without ever touching completing this feature.
-No blues drop whatsoever, only the very same green levelling ilevel gear you would otherwise get through questing.
-No mount, pet, or any other vanity item dropping in this mode.
-No cheevos, and especially no world firsts - this is your private story after all.
-It exists for learning and taking in the story at your own personal pace.
-Same difficulty as normal instances but with NPCs like in Exile's Reach dungeon.
-Learn the story and the mechanics until you feel ready to be grouped with other players.
-And most importantly finish any instance quests on your own without waiting! Does not apply to repeatable quests like dailies etc.
After that it's time to dive in, have fun and grind the instances with friends and pugs as many times as you like